トップ›研究者一覧›林順司

研究者を探す

研究者にアプローチする
更新情報を通知する

林順司

徳島大学

プロフィール
教育活動
研究活動
社会活動
リサーチマップ・
Jグローバル
KAKEN
注目研究

研究者総覧で最新データを確認する

2024年4月19日更新

職名: 講師
電話: 研究者総覧に該当データはありませんでした。
電子メール: 研究者総覧に該当データはありませんでした。
学歴: ????/??: 徳島大学工学部生物工学科 ( - 2007. 3.)
????/??: 徳島大学大学院先端技術科学教育部環境創生工学専攻 ( - 2009. 3.)
????/??: 愛媛大学大学院連合農学研究科生物資源利用学専攻 ( - 2017. 3.)
学位: 博士(農学) (愛媛大学)
職歴・経歴: 2013/0: 香川大学総合生命科学研究センター
2017/4: 立命館大学生命科学部生物工学科

専門分野・研究分野: 酵素工学 (Enzyme Engineering)
構造生物学 (Structural Biology)

研究者総覧で最新データを確認する

2024年4月19日更新

専門分野・研究分野: 酵素工学 (Enzyme Engineering)
構造生物学 (Structural Biology)
担当経験のある授業科目: ビタミン学 (学部)
フードサイエンス (学部)
代謝生化学 (学部)
卒業研究 (学部)
基礎化学実験 (共通教育)
基礎食品化学 (学部)
生物資源学研究 (大学院)
生物資源産業学B (学部)
生物資源産業学実習 (学部)
生物資源産業学専門英語 (学部)
英語論文講読 (学部)
英語論文講読Ⅰ (学部)
英語論文講読Ⅱ (学部)
蛋白質機能学特論 (大学院)
酵素化学 (学部)
食と健康概論 (学部)
食品アレルギー学 (学部)
食料生物科学特別実習 (大学院)
食料生物科学特別演習 (大学院)
食料生物科学特別研究 (大学院)
食料生物科学特別講義 (大学院)
食料科学基礎実習 (学部)
食料科学実習A (学部)
食料科学実習B (学部)
食料科学実習C (学部)
食料科学実習Ⅰ (学部)
食料科学実習Ⅱ (学部)
食料科学概論 (学部)
指導経験: 10人 (学士), 2人 (修士)

研究者総覧で最新データを確認する

2024年4月19日更新

専門分野・研究分野: 酵素工学 (Enzyme Engineering)
構造生物学 (Structural Biology)

研究テーマ: 研究者総覧に該当データはありませんでした。

著書

研究者総覧に該当データはありませんでした。

論文

Chizuru Sasaki, Satoshi Tamura, Miyuki Suzuki, Kanako Etomi, Nobuya Nii, Junji Hayashi and Kaori Kanemaru :
Continuous microwave-assisted step-by-step extraction of bioactive water-soluble materials and fucoidan from brown seaweed Undaria pinnatifida waste,
Biomass Conversion and Biorefinery, Vol.14, 7673-7682, 2024.

(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s13399-022-03035-6
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1007/s13399-022-03035-6

(DOI: 10.1007/s13399-022-03035-6) Yoshimichi Takai, Rumana Yesmin Hasi, Naoko Matsumoto, Chiho Fujita, Hanif Ali, Junji Hayashi, Ryushi Kawakami, Mutsumi Aihara, Toshiki Ishikawa, Hiroyuki Imai, Mayuko Wakida, Kazuya Ando and Tamotsu Tanaka :
Degradation of glycosylinositol phosphoceramide during plant tissue homogenization,
The Journal of Biochemistry, Vol.175, No.1, 115-124, 2024.

(徳島大学機関リポジトリ): ● Metadata: 118914
(出版サイトへのリンク): ● Publication site (DOI): 10.1093/jb/mvad080
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1093/jb/mvad080

(徳島大学機関リポジトリ: 118914, DOI: 10.1093/jb/mvad080) Ryushi Kawakami, Takami Naoki, Junji Hayashi, Kazunari Yoneda, Ohmori Taketo, Toshihisa Ohshima and Haruhiko Sakuraba :
First crystal structure of an NADP+-dependent L-arginine dehydrogenase belonging to the μ-crystallin family,
International Journal of Biological Macromolecules, Vol.249, 2023.

(キーワード): L-Arginine dehydrogenase / μ-Crystallin/ornithine cyclodeaminase family / Crystal structure / Amino acid dehydrogenase / Site-directed mutagenesis
(徳島大学機関リポジトリ): ● Metadata: 119010
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.ijbiomac.2023.126070
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1016/j.ijbiomac.2023.126070

(徳島大学機関リポジトリ: 119010, DOI: 10.1016/j.ijbiomac.2023.126070) Hanif Ali, Miyu Kobayashi, Katsuya Morito, Rumana Yesmin, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Koichiro Tsuchiya, Kazunori Sango and Tamotsu Tanaka :
Peroxisomes attenuate cytotoxicity of very long-chain fatty acids,
Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids, Vol.1868, No.2, 159259, 2023.

(要約): One of the major functions of peroxisomes in mammals is oxidation of very long-chain fatty acids (VLCFAs). Genetic defects in peroxisomal β-oxidation result in the accumulation of VLCFAs and lead to a variety of health problems, such as demyelination of nervous tissues. However, the mechanisms by which VLCFAs cause tissue degeneration have not been fully elucidated. Recently, we found that the addition of small amounts of isopropanol can enhance the solubility of saturated VLCFAs in an aqueous medium. In this study, we characterized the biological effect of extracellular VLCFAs in peroxisome-deficient Chinese hamster ovary (CHO) cells, neural crest-derived pheochromocytoma cells (PC12), and immortalized adult Fischer rat Schwann cells (IFRS1) using this solubilizing technique. C20:0 FA was the most toxic of the C16-C26 FAs tested in all cells. The basis of the toxicity of C20:0 FA was apoptosis and was observed at 5 μM and 30 μM in peroxisome-deficient and wild-type CHO cells, respectively. The sensitivity of wild-type CHO cells to cytotoxic C20:0 FA was enhanced in the presence of a peroxisomal β-oxidation inhibitor. Further, a positive correlation was evident between cell toxicity and the extent of intracellular accumulation of toxic FA. These results suggest that peroxisomes are pivotal in the detoxification of apoptotic VLCFAs by preventing their accumulation.
(キーワード): Cricetinae / Animals / Peroxisomes / Fatty Acids / CHO Cells / Cricetulus / Oxidation-Reduction
(徳島大学機関リポジトリ): ● Metadata: 117825
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.bbalip.2022.159259
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36460260; ● Search Scopus @ Elsevier (PMID): 36460260; ● Search Scopus @ Elsevier (DOI): 10.1016/j.bbalip.2022.159259

(徳島大学機関リポジトリ: 117825, DOI: 10.1016/j.bbalip.2022.159259, PubMed: 36460260) Rumana Yesmin Hasi, Toshiki Ishikawa, Keigo Sunagawa, Yoshimichi Takai, Hanif Ali, Junji Hayashi, Ryushi Kawakami, Keizo Yuasa, Mutsumi Aihara, Kaori Kanemaru, Hiroyuki Imai and Tamotsu Tanaka :
Nonspecific phospholipase C3 of radish has phospholipase D activity toward glycosylinositol phosphoceramide,
FEBS Letters, Vol.596, No.23, 3024-3036, 2022.

(要約): Glycosylinositol phosphoceramide (GIPC) is a major sphingolipid in the plasma membranes of plants. Previously, we found an enzyme activity that produces phytoceramide 1-phosphate (PC1P) by hydrolysis of the D position of GIPC in cabbage and named this activity as GIPC-phospholipase D (PLD). Here, we purified GIPC-PLD by sequential chromatography from radish roots. Peptide mass fingerprinting analysis revealed that the potential candidate for GIPC-PLD protein was nonspecific phospholipase C3 (NPC3), which has not been characterized as a PLD. The recombinant NPC3 protein obtained by heterologous expression system in Escherichia coli produced PC1P from GIPC and showed essentially the same enzymatic properties as those we characterized as GIPC-PLD in cabbage, radish and Arabidopsis thaliana. From these results, we conclude that NPC3 is one of the enzymes that degrade GIPC.
(キーワード): Phospholipase D / Raphanus / Phospholipases / Sphingolipids / Brassica / Arabidopsis
(徳島大学機関リポジトリ): ● Metadata: 117824
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/1873-3468.14520
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 36266963; ● Search Scopus @ Elsevier (PMID): 36266963; ● Search Scopus @ Elsevier (DOI): 10.1002/1873-3468.14520

(徳島大学機関リポジトリ: 117824, DOI: 10.1002/1873-3468.14520, PubMed: 36266963) Ryushi Kawakami, Tatsuya Ohshida, Junji Hayashi, Kazunari Yoneda, Toshio Furumoto, Toshihisa Ohshima and Haruhiko Sakuraba :
Crystal structure of a novel type of ornithine δ-aminotransferase from the hyperthermophilic archaeon Pyrococcus horikoshii,
International Journal of Biological Macromolecules, Vol.208, 731-740, 2022.

(要約): Ornithine δ-aminotransferase (Orn-AT) activity was detected for the enzyme annotated as a γ-aminobutyrate aminotransferase encoded by PH1423 gene from Pyrococcus horikoshii OT-3. Crystal structures of this novel archaeal ω-aminotransferase were determined for the enzyme in complex with pyridoxal 5'-phosphate (PLP), in complex with PLP and l-ornithine (l-Orn), and in complex with N-(5'-phosphopyridoxyl)-l-glutamate (PLP-l-Glu). Although the sequence identity was relatively low (28%), the main-chain coordinates of P. horikoshii Orn-AT monomer showed notable similarity to those of human Orn-AT. However, the residues recognizing the α-amino group of l-Orn differ between the two enzymes. In human Orn-AT, Tyr55 and Tyr85 recognize the α-amino group, whereas the side chains of Thr92* and Asp93*, which arise from a loop in the neighboring subunit, form hydrogen bonds with the α-amino group of the substrate in P. horikoshii enzyme. Site-directed mutagenesis suggested that Asp93* plays critical roles in maintaining high affinity for the substrate. This study provides new insight into the substrate binding of a novel type of Orn-AT. Moreover, the structure of the enzyme with the reaction-intermediate analogue PLP-l-Glu bound provides the first structural evidence for the "Glu switch" mechanism in the dual substrate specificity of Orn-AT.
(キーワード): Archaea / Crystallography, X-Ray / Humans / Models, Molecular / Ornithine / Pyridoxal Phosphate / Pyrococcus horikoshii / Substrate Specificity / Transaminases
(徳島大学機関リポジトリ): ● Metadata: 119006
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.ijbiomac.2022.03.114
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 35337912; ● Summary page in Scopus @ Elsevier: 2-s2.0-85127367273

(徳島大学機関リポジトリ: 119006, DOI: 10.1016/j.ijbiomac.2022.03.114, PubMed: 35337912, Elsevier: Scopus) Ali Hanif, Morito Katsuya, Rumana Hasi Yesmin, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru, Koichiro Tsuchiya, Sango Kazunori and Tamotsu Tanaka :
Characterization of uptake and metabolism of very long-chain fatty acids in peroxisome-deficient CHO cells,
Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids, Vol.1867, No.2, 159088, 2022.

(要約): Fatty acids (FAs) longer than C20 are classified as very long-chain fatty acids (VLCFAs). Although biosynthesis and degradation of VLCFAs are important for the development and integrity of the myelin sheath, knowledge on the incorporation of extracellular VLCFAs into the cells is limited due to the experimental difficulty of solubilizing them. In this study, we found that a small amount of isopropanol solubilized VLCFAs in aqueous medium by facilitating the formation of the VLCFA/albumin complex. Using this solubilizing technique, we examined the role of the peroxisome in the uptake and metabolism of VLCFAs in Chinese hamster ovary (CHO) cells. When wild-type CHO cells were incubated with saturated VLCFAs (S-VLCFAs), such as C23:0 FA, C24:0 FA, and C26:0 FA, extensive uptake was observed. Most of the incorporated S-VLCFAs were oxidatively degraded without acylation into cellular lipids. In contrast, in peroxisome-deficient CHO cells uptake of S-VLCFAs was marginal and oxidative metabolism was not observed. Extensive uptake and acylation of monounsaturated (MU)-VLCFAs, such as C24:1 FA and C22:1 FA, were observed in both types of CHO cells. However, oxidative metabolism was evident only in wild-type cells. Similar manners of uptake and metabolism of S-VLCFAs and MU-VLCFAs were observed in IFRS1, a Schwan cell-derived cell line. These results indicate that peroxisome-deficient cells limit intracellular S-VLCFAs at a low level by halting uptake, and as a result, peroxisome-deficient cells almost completely lose the clearance ability of S-VLCFAs accumulated outside of the cells.
(徳島大学機関リポジトリ): ● Metadata: 116579
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.bbalip.2021.159088
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 34848380; ● Search Scopus @ Elsevier (PMID): 34848380; ● Search Scopus @ Elsevier (DOI): 10.1016/j.bbalip.2021.159088

(徳島大学機関リポジトリ: 116579, DOI: 10.1016/j.bbalip.2021.159088, PubMed: 34848380) Hanif Ali, Ryouhei Yamashita, Jun-ichi Morishige, Katsuya Morito, Naoya Kakiuchi, Junji Hayashi, Mutsumi Aihara, Ryushi Kawakami, Koichiro Tsuchiya and Tamotsu Tanaka :
Massspectrometric analysis of sphingomyelin with N-alfa-hydroxy fatty acyl residue in mouse tissues,
Lipids, Vol.56, No.2, 181-188, 2021.

(徳島大学機関リポジトリ): ● Metadata: 117826
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/lipd.12285
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.1002/lipd.12285

(徳島大学機関リポジトリ: 117826, DOI: 10.1002/lipd.12285) Ryushi Kawakami, Chinatsu Kinoshita, Tomoki Kawase, Mikio Sato, Junji Hayashi, Haruhiko Sakuraba and Toshihisa Ohshima :
Characterization of novel moderate-substrate specificity amino acid racemase from the hyperthermophilic archaeon Thermococcus litoralis.,
Bioscience, Biotechnology, and Biochemistry, Vol.85, No.7, 1650-1657, 2021.

(要約): The amino acid sequence of the OCC_10945 gene product from the hyperthermophilic archaeon Thermococcus litoralis DSM5473, originally annotated as γ-aminobutyrate aminotransferase, is highly similar to that of the uncharacterized pyridoxal 5'-phosphate (PLP)-dependent amino acid racemase from Pyrococcus horikoshii. The OCC_10945 enzyme was successfully overexpressed in Escherichia coli by coexpression with a chaperone protein. The purified enzyme demonstrated PLP-dependent amino acid racemase activity primarily toward Met and Leu. Although PLP contributed to enzyme stability, it only loosely bound to this enzyme. Enzyme activity was strongly inhibited by several metal ions, including Co2+ and Zn2+, and nonsubstrate amino acids such as l-Arg and l-Lys. These results suggest that the underlying PLP-binding and substrate recognition mechanisms in this enzyme are significantly different from those of the other archaeal and bacterial amino acid racemases. This is the first description of a novel PLP-dependent amino acid racemase with moderate substrate specificity in hyperthermophilic archaea.
(キーワード): PLP / amino acid racemase / substrate specificity / Thermococcus litoralis
(徳島大学機関リポジトリ): ● Metadata: 116135
(出版サイトへのリンク): ● Publication site (DOI): 10.1093/bbb/zbab078
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 33942867; ● Search Scopus @ Elsevier (PMID): 33942867; ● Search Scopus @ Elsevier (DOI): 10.1093/bbb/zbab078

(徳島大学機関リポジトリ: 116135, DOI: 10.1093/bbb/zbab078, PubMed: 33942867) Junji Hayashi, Yoshiaki Ichiki, Akiko Kanda, Kazuyoshi Takagi and Mamoru Wakayama :
Identification, characterization, and cloning of a novel aminoacylase, L-pipecolic acid acylase from Pseudomonas species,
The Journal of General and Applied Microbiology, 2021.

(要約): L-Pipecolic acid is utilized as a vital component of specific chemical compounds, such as immunosuppressive drugs, anticancer reagents, and anesthetic reagents. We isolated and characterized a novel L-aminoacylase, N-acetyl-L-pipecolic acid-specific aminoacylase (LpipACY), from Pseudomonas sp. AK2. The subunit molecular mass of LpipACY was 45 kDa and was assumed to be a homooctamer in solution. The enzyme exhibited high substrate specificity toward N-acetyl-L-pipecolic acid and a high activity for N-acetyl-L-pipecolic acid and N-acetyl-L-proline. This enzyme was stable at a high temperature (60°C for 10 min) and under an alkaline pH (6.0-11.5). The N-terminal and internal amino acid sequences of the purified enzyme were STTANTLILRNG and IMASGGV, respectively. These sequences are highly consistent with those of uncharacterized proteins from Pseudomonas species, such as amidohydrolase and peptidase. We also cloned and overexpressed the gene coding LpipACY in Escherichia coli. Moreover, the recombinant LpipACY exhibited properties similar to native enzyme. Our results suggest that LpipACY is a potential enzyme for the enzymatic synthesis of L-pipecolic acid. This study provides the first description of the enzymatic characterization of L-pipecolic acid specific amino acid acylase.
(出版サイトへのリンク): ● Publication site (DOI): 10.2323/jgam.2020.12.001
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 34176819; ● Search Scopus @ Elsevier (PMID): 34176819; ● Search Scopus @ Elsevier (DOI): 10.2323/jgam.2020.12.001

(DOI: 10.2323/jgam.2020.12.001, PubMed: 34176819) Tasneem Chemama, Junji Hayashi, Mamoru Wakayama and Narumol Thongwai :
Characteristics of D-lactate Dehydrogenase from the High Potential D-lactic Acid Producer Leuconostoc pseudomesenteroides TC49 Isolated from Thailand,
Chiang Mai Journal of Science, Vol.48, No.1, 42-55, 2021.

(文献検索サイトへのリンク): ● Summary page in Scopus @ Elsevier: 2-s2.0-85099648660

(Elsevier: Scopus) Chiharu Sano, Takafumi Itoh, Putthapong Phumsombat, Junji Hayashi, Mamoru Wakayama and Takao Hibi :
Mutagenesis and structure-based analysis of the role of Tryptophan525 of γ-glutamyltranspeptidase from Pseudomonas nitroreducens.,
Biochemical and Biophysical Research Communications, 2021.

(要約): γ-Glutamyltranspeptidase (GGT) is a ubiquitous enzyme that catalyzes the hydrolysis of the γ-glutamyl linkage of γ-glutamyl compounds and the transfer of their γ-glutamyl moiety to acceptor substrates. Pseudomonas nitroreducens GGT (PnGGT) is used for the industrial synthesis of theanine, thus it is important to determine the structural basis of hydrolysis and transfer reactions and identify the acceptor site of PnGGT to improve the efficient of theanine synthesis. Our previous structural studies of PnGGT have revealed that crucial interactions between three amino acid residues, Trp385, Phe417, and Trp525, distinguish PnGGT from other GGTs. Here we report the role of Trp525 in PnGGT based on site-directed mutagenesis and structural analyses. Seven mutant variants of Trp525 were produced (W525F, W525V, W525A, W525G, W525S, W525D, and W525K), with substitution of Trp525 by nonaromatic residues resulting in dramatically reduced hydrolysis activity. All Trp525 mutants exhibited significantly increased transfer activity toward hydroxylamine with hardly any effect on acceptor substrate preference. The crystal structure of PnGGT in complex with the glutamine antagonist, 6-diazo-5-oxo-l-norleucine, revealed that Trp525 is a key residue limiting the movement of water molecules within the PnGGT active site.
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.bbrc.2020.11.093
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 33288198; ● Search Scopus @ Elsevier (PMID): 33288198; ● Search Scopus @ Elsevier (DOI): 10.1016/j.bbrc.2020.11.093

(DOI: 10.1016/j.bbrc.2020.11.093, PubMed: 33288198) Takafumi Itoh, Niphawan Panti, Junji Hayashi, Yosuke Toyotake, Daisuke Matsui, Shigekazu Yano, Mamoru Wakayama and Takao Hibi :
Crystal structure of the catalytic unit of thermostable GH87 α-1,3-glucanase from Streptomyces thermodiastaticus strain HF3-3.,
Biochemical and Biophysical Research Communications, Vol.533, No.4, 1170-1176, 2020.

(要約): α-1,3-Glucan is a homopolymer composed of D-glucose (Glc) and it is an extracellular polysaccharide found in dental plaque due to Streptococcus species. α-1,3-Glucanase from Streptomyces thermodiastaticus strain HF3-3 (Agl-ST) has been identified as a thermostable α-1,3-glucanase, which is classified into glycoside hydrolase family 87 (GH87) and specifically hydrolyzes α-1,3-glucan with an endo-action. The enzyme has a potential to inhibit the production of dental plaque and to be used for biotechnological applications. Here we show the structure of the catalytic unit of Agl-ST determined at 1.16 Å resolution using X-ray crystallography. The catalytic unit is composed of two modules, a β-sandwich fold module, and a right-handed β-helix fold module, which resembles other structural characterized GH87 enzymes from Bacillus circulans str. KA-304 and Paenibacillus glycanilyticus str. FH11, with moderate sequence identities between each other (approximately 27% between the catalytic units). However, Agl-ST is smaller in size and more thermally stable than the others. A disulfide bond that anchors the C-terminal coil of the β-helix fold, which is expected to contribute to thermal stability only exists in the catalytic unit of Agl-ST.
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.bbrc.2020.09.133
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 33041007; ● Search Scopus @ Elsevier (PMID): 33041007; ● Search Scopus @ Elsevier (DOI): 10.1016/j.bbrc.2020.09.133

(DOI: 10.1016/j.bbrc.2020.09.133, PubMed: 33041007) Rumana Yesmin Hasi, Dai Majima, Katsuya Morito, Hanif Ali, Kentaro Kogure, Meera Nanjundan, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru and Tamotsu Tanaka :
Isolation of glycosylinositol phosphoceramide and phytoceramide 1-phosphate in plants and their chemical stabilities.,
Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences, Vol.1152, 122213, 2020.

(要約): Glycosylinositol phosphoceramide (GIPC) is a sphingophospholipid in plants. Recently, we identified that GIPC is hydrolyzed to phytoceramide 1-phosphate (PC1P) by an uncharacterized phospholipase D activity following homogenization of certain plant tissues. We now developed methods for isolation of GIPC and PC1P from plant tissues and characterized their chemical stabilities. Hydrophilic solvents, namely a lower layer of a mixed solvent system consisting of isopropanol/hexane/water (55:20:25, v/v/v) was efficient solvent for extraction and eluent in column chromatography. GIPC was isolated by Sephadex column chromatography followed by TLC. A conventional method, such as the Bligh and Dyer method, was applicable for PC1P extraction. Specifically, PC1P was isolated by TLC following mild alkali treatment of lipid extracts of plants. The yields of GIPC and PC1P in our methods were both around 50-70%. We found that PC1P is tolerant against heat (up to 125 °C), strong acid (up to 10 M HCl), and mild alkali (0.1 M KOH). In contrast, significant degradation of GIPC occurred at 100 °C and 1.0 M HCl treatment, suggesting the instability of the inositol glycan moiety in these conditions. These data will be useful for further biochemical and nutritional studies on these sphingolipids.
(徳島大学機関リポジトリ): ● Metadata: 115195
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.jchromb.2020.122213
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 32615533; ● Search Scopus @ Elsevier (PMID): 32615533; ● Search Scopus @ Elsevier (DOI): 10.1016/j.jchromb.2020.122213

(徳島大学機関リポジトリ: 115195, DOI: 10.1016/j.jchromb.2020.122213, PubMed: 32615533) Putthapong Phumsombat, Chiharu Sano, Hiroki Ikezoe, Junji Hayashi, Takafumi Itoh, Takao Hibi and Mamoru Wakayama :
Efficient Production of L-Theanine Using Immobilized Recombinant Escherichia coli Cells Expressing a Modified γ-Glutamyltranspeptidase Gene from Pseudomonas nitroreducens,
Advances in Biological Chemistry, Vol.10, No.6, 157-171, 2020.

(出版サイトへのリンク): ● Publication site (DOI): 10.4236/abc.2020.106012
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.4236/abc.2020.106012

(DOI: 10.4236/abc.2020.106012) Takafumi Itoh, Rattanaporn Intuy, Wasana Suyotha, Junji Hayashi, Shigekazu Yano, Koki Makabe, Mamoru Wakayama and Takao Hibi :
Structural insights into substrate recognition and catalysis by glycoside hydrolase family 87 α-1,3-glucanase from Paenibacillus glycanilyticus FH11.,
The FEBS Journal, 2019.

(要約): The α-1,3-glucanase from Paenibacillus glycanilyticus FH11 (Agl-FH1), a member of the glycoside hydrolase family 87 (GH87), hydrolyzes α-1,3-glucan with an endo-action. GH87 enzymes are known to degrade dental plaque produced by oral pathogenic Streptococcus species. In this study, the kinetic analyses revealed that this enzyme hydrolyzed α-1,3-tetraglucan into glucose and α-1,3-triglucan with β-configuration at the reducing end by an inverting mechanism. The crystal structures of the catalytic domain (CatAgl-FH1) complexed with or without oligosaccharides at 1.4-2.5 or 1.6 Å resolutions, respectively, are also presented. The initial crystal structure of CatAgl-FH1 was determined by native single-wavelength anomalous diffraction. The catalytic domain was composed of two modules, a β-sandwich fold module, and a right-handed β-helix fold module. The structure of the β-sandwich was similar to those of the carbohydrate-binding module family 35 members. The glycerol or nigerose enzyme complex structures demonstrated that this β-sandwich fold module is a novel carbohydrate-binding module with the capabilities to bind saccharides and to promote the degradation of polysaccharides. The structures of the inactive mutant in complexes with oligosaccharide showed that at least eight subsites for glucose binding were located in the active cleft of the β-helix fold and the architecture of the active cleft was suitable for the recognition and hydrolysis of α-1,3-glucan by the inverting mechanism. The structural similarity to GH28 and GH49 enzymes and the results of site-directed mutagenesis indicated that three Asp residues, Asp1045, Asp1068, and Asp1069, are the most likely candidates for the catalytic residues of Agl-FH1. DATABASE: Structural data are available in RCSB Protein Data Bank under the accession numbers 6K0M (CatAgl-FH1), 6K0N (WT/nigerose), 6K0P (D1045A/nigerose), 6K0Q (D1068A/nigerose), 6K0S (D1069A/ nigerose), 6K0U (D1068A/oligo), and 6K0V (D1069A/oligo). ENZYMES: Agl-FH1, α-1,3-glucanase (EC3.2.1.59) from Paenibacillus glycanilyticus FH11.
(出版サイトへのリンク): ● Publication site (DOI): 10.1111/febs.15161
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31788942; ● Search Scopus @ Elsevier (PMID): 31788942; ● Search Scopus @ Elsevier (DOI): 10.1111/febs.15161

(DOI: 10.1111/febs.15161, PubMed: 31788942) Tatsuya Ohshida, Junji Hayashi, Kazunari Yoneda, Toshihisa Ohshima and Haruhiko Sakuraba :
Unique active site formation in a novel galactose 1-phosphate uridylyltransferase from the hyperthermophilic archaeon Pyrobaculum aerophilum.,
Proteins, 2019.

(要約): A gene encoding galactose 1-phosphate uridylyltransferase (GalT) was identified in the hyperthermophilic archaeon Pyrobaculum aerophilum. The gene was overexpressed in Escherichia coli, after which its product was purified and characterized. The expressed enzyme was highly thermostable and retained about 90% of its activity after incubation for 10 minutes at temperatures up to 90°C. Two different crystal structures of P. aerophilum GalT were determined: the substrate-free enzyme at 2.33 Å and the UDP-bound H140F mutant enzyme at 1.78 Å. The main-chain coordinates of the P. aerophilum GalT monomer were similar to those in the structures of the E. coli and human GalTs, as was the dimeric arrangement. However, there was a striking topological difference between P. aerophilum GalT and the other two enzymes. In the E. coli and human enzymes, the N-terminal chain extends from one subunit into the other and forms part of the substrate-binding pocket in the neighboring subunit. By contrast, the N-terminal chain in P. aerophilum GalT extends to the substrate-binding site in the same subunit. Amino acid sequence alignment showed that a shorter surface loop in the N-terminal region contributes to the unique topology of P. aerophilum GalT. Structural comparison of the substrate-free enzyme with UDP-bound H140F suggests that binding of the glucose moiety of the substrate, but not the UDP moiety, gives rise to a large structural change around the active site. This may in turn provide an appropriate environment for the enzyme reaction.
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/prot.25848
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31693208; ● Search Scopus @ Elsevier (PMID): 31693208; ● Search Scopus @ Elsevier (DOI): 10.1002/prot.25848

(DOI: 10.1002/prot.25848, PubMed: 31693208) Rumana Yesmin Hasi, Makoto Miyagi, Takashi Kida, Tatsuya Fukuta, Kentaro Kogure, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru and Tamotsu Tanaka :
Quantitative Analysis of Glycosylinositol Phosphoceramide and Phytoceramide 1-Phosphate in Vegetables,
Journal of Nutritional Science and Vitaminology, Vol.65, No.Supplement, S175-S179, 2019.

(要約): Previously, we found an unidentified sphingolipid in cabbage, and determined it as phytoceramide 1-phosphate (PC1P). PC1P is found to be produced from glycosylinositol phosphoceramide (GIPC) by the action of phospholipase D (PLD) activity. Although GIPC is abundant sphingolipid, especially in cruciferous vegetables, amount of daily intake, digestibility and nutritional activity of GIPC are not well understood. Here, we investigated amounts of GIPC and PC1P in vegetables. GIPC was found in all vegetables examined (13 kinds) at levels 3-20 mg/100 g (wet weight). On the other hand, PC1P was present in limited vegetables which show higher GIPC-PLD activity, such as inner cabbage leaves (5.2 mg/100 g). Because PC1P is formed during homogenization by activated GIPC-PLD, level of PC1P in boiled cabbage leaves was very low. Although digestibility of GIPC is unknown at present, a portion of dietary GIPC is considered to be converted to PC1P during mastication by plant-derived GIPC-PLD activity in some vegetables.
(キーワード): Brassica / Ceramides / Glycosphingolipids / Inositol / Phosphates / Phospholipase D / Plant Leaves / Sphingolipids / Vegetables
(徳島大学機関リポジトリ): ● Metadata: 115197
(出版サイトへのリンク): ● Publication site (DOI): 10.3177/jnsv.65.S175
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31619623; ● Summary page in Scopus @ Elsevier: 2-s2.0-85073476996

(徳島大学機関リポジトリ: 115197, DOI: 10.3177/jnsv.65.S175, PubMed: 31619623, Elsevier: Scopus) Kodchakorn Phetsri, Makoto Furukawa, Risa Yamashiro, Yuka Kawamura, Junji Hayashi, Ryuta Tobe, Yosuke Toyotake and Mamoru Wakayama :
Comparative Biochemical Characterization of L-Asparaginases from Four Species of Lactic Acid Bacteria,
Journal of Biotechnology and Biomedicine, Vol.2, No.3, 112-124, 2019.

(出版サイトへのリンク): ● Publication site (DOI): 10.26502/jbb.2642-91280015
(文献検索サイトへのリンク): ● Search Scopus @ Elsevier (DOI): 10.26502/jbb.2642-91280015

(DOI: 10.26502/jbb.2642-91280015) Hasi Yesmin Rumana, Makoto Miyagi, Katsuya Morito, Toshiki Ishikawa, Maki Kawai-Yamada, Hiroyuki Imai, Tatsuya Fukuta, Kentaro Kogure, Kaori Kanemaru, Junji Hayashi, Ryushi Kawakami and Tamotsu Tanaka :
Glycosylinositol phosphoceramide-specific phospholipase D activity catalyzes transphosphatidylation,
The Journal of Biochemistry, Vol.166, No.5, 441-448, 2019.

(要約): Glycosylinositol phosphoceramide (GIPC) is the most abundant sphingolipid in plants and fungi. Recently, we detected GIPC-specific phospholipase D (GIPC-PLD) activity in plants. Here, we found that GIPC-PLD activity in young cabbage leaves catalyzes transphosphatidylation. The available alcohol for this reaction is a primary alcohol with a chain length below C4. Neither secondary alcohol, tertiary alcohol, choline, serine nor glycerol serves as an acceptor for transphosphatidylation of GIPC-PLD. We also found that cabbage GIPC-PLD prefers GIPC containing two sugars. Neither inositol phosphoceramide, mannosylinositol phosphoceramide nor GIPC with three sugar chains served as substrate. GIPC-PLD will become a useful catalyst for modification of polar head group of sphingophospholipid.
(キーワード): Biocatalysis / Brassica / Ceramides / Inositol / Molecular Structure / Phosphatidylcholines / Phospholipase D / Plant Leaves
(徳島大学機関リポジトリ): ● Metadata: 113685
(出版サイトへのリンク): ● Publication site (DOI): 10.1093/jb/mvz056
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 31504617; ● Summary page in Scopus @ Elsevier: 2-s2.0-85073764089

(徳島大学機関リポジトリ: 113685, DOI: 10.1093/jb/mvz056, PubMed: 31504617, Elsevier: Scopus) Rattanaporn Intuy, Takafumi Itoh, Wasana Suyotha, Junji Hayashi, Shigekazu Yano, Koki Makabe, Mamoru Wakayama and Takao Hibi :
X-ray crystallographic analysis of the catalytic domain of α-1,3-glucanase FH1 from Paenibacillus glycanilyticus overexpressed in Brevibacillus choshinensis.,
Acta Crystallographica. Section F, Structural Biology Communications, Vol.74, No.Pt 12, 770-773, 2018.

(要約): 2, with unit-cell parameters a = b = 132.6, c = 76.1 Å. The space group and unit-cell parameters suggest that there is one molecule in the asymmetric unit.
(キーワード): Amino Acid Sequence / Brevibacillus / Catalytic Domain / Crystallography, X-Ray / Gene Expression Regulation, Bacterial / Gene Expression Regulation, Enzymologic / Glucans / Glycoside Hydrolases / Paenibacillus
(出版サイトへのリンク): ● Publication site (DOI): 10.1107/S2053230X18013109
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30511670; ● Search Scopus @ Elsevier (PMID): 30511670; ● Search Scopus @ Elsevier (DOI): 10.1107/S2053230X18013109

(DOI: 10.1107/S2053230X18013109, PubMed: 30511670) Saddam Md Hossain, Takahiro Tanaka, Junji Hayashi, Kazuyoshi Takagi, Yoichi Takeda and Mamoru Wakayama :
Characterization and Thermal Denaturation Kinetic Analysis of Recombinant l-Amino Acid Ester Hydrolase from Stenotrophomonas maltophilia.,
Journal of Agricultural and Food Chemistry, Vol.66, No.42, 11064-11072, 2018.

(キーワード): Amino Acid Sequence / Amino Acids / Carboxylic Ester Hydrolases / Cloning, Molecular / Dipeptides / Enzyme Stability / Escherichia coli / Esters / Gene Expression / Hydrogen-Ion Concentration / Kinetics / Stenotrophomonas maltophilia / Temperature / Thermodynamics / Xanthomonas
(出版サイトへのリンク): ● Publication site (DOI): 10.1021/acs.jafc.8b04573
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30277765; ● Search Scopus @ Elsevier (PMID): 30277765; ● Search Scopus @ Elsevier (DOI): 10.1021/acs.jafc.8b04573

(DOI: 10.1021/acs.jafc.8b04573, PubMed: 30277765) Takenori Satomura, Junji Hayashi, Tatsuya Ohshida, Haruhiko Sakuraba, Toshihisa Ohshima and Shin-Ichiro Suye :
Enzymological characteristics of a novel archaeal dye-linked D-lactate dehydrogenase showing loose binding of FAD.,
Extremophiles, Vol.22, No.6, 975-981, 2018.

(要約): A gene-encoding a dye-linked D-lactate dehydrogenase (Dye-DLDH) homolog was identified in the genome of the hyperthermophilic archaeon Thermoproteus tenax. The gene was expressed in Escherichia coli and the product was purified to homogeneity. The recombinant protein exhibited highly thermostable Dye-DLDH activity. To date, four types of Dye-DLDH have been identified in hyperthermophilic archaea (in Aeropyrum pernix, Sulfolobus tokodaii, Archaeoglobus fulgidus, and Candidatus Caldiarchaeum subterraneum). The amino acid sequence of T. tenax Dye-DLDH showed the highest similarity (45%) to A. pernix Dye-DLDH, but neither contained a known FAD-binding motif. Nonetheless, both homologs required FAD for enzymatic activity, suggesting that FAD binds loosely to the enzyme and is easily released unlike in other Dye-DLDHs. Our findings indicate that Dye-DLDHs from T. tenax and A. pernix are a novel type of Dye-DLDH characterized by loose binding of FAD.
(キーワード): Archaeal Proteins / Biosensing Techniques / Electrochemical Techniques / Flavin-Adenine Dinucleotide / Lactate Dehydrogenases / Molecular Mimicry / Sequence Homology, Amino Acid / Structural Homology, Protein / Thermoproteus
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s00792-018-1054-3
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30206766; ● Search Scopus @ Elsevier (PMID): 30206766; ● Search Scopus @ Elsevier (DOI): 10.1007/s00792-018-1054-3

(DOI: 10.1007/s00792-018-1054-3, PubMed: 30206766) Tatsuya Ohshida, Kohei Koba, Junji Hayashi, Kazunari Yoneda, Taketo Ohmori, Toshihisa Ohshima and Haruhiko Sakuraba :
A novel bifunctional aspartate kinase-homoserine dehydrogenase from the hyperthermophilic bacterium, Thermotoga maritima.,
Bioscience, Biotechnology, and Biochemistry, Vol.82, No.12, 2084-2093, 2018.

(要約): = 500 μM). In contrast to A. thaliana AK-HseDH, Hse oxidation of the T. maritima enzyme was almost impervious to inhibition by L-threonine. Amino acid sequence comparison indicates that the distinctive sequence of the regulatory domain in T. maritima AK-HseDH is likely responsible for the unique sensitivity to L-threonine. Abbreviations: AK: aspartate kinase; HseDH: homoserine dehydrogenase; AK-HseDH: bifunctional aspartate kinase-homoserine dehydrogenase; AsaDH: aspartate-β-semialdehyde dehydrogenase; ACT: aspartate kinases (A), chorismate mutases (C), and prephenate dehydrogenases (TyrA, T).
(キーワード): Amino Acid Sequence / Aspartic Acid / Aspartokinase Homoserine Dehydrogenase / Biocatalysis / Electrophoresis, Polyacrylamide Gel / Enzyme Stability / Escherichia coli / Hot Temperature / Hydrogen-Ion Concentration / Kinetics / Protein Conformation / Recombinant Proteins / Sequence Homology, Amino Acid / Thermotoga maritima / Threonine
(出版サイトへのリンク): ● Publication site (DOI): 10.1080/09168451.2018.1511365
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30175674; ● Search Scopus @ Elsevier (PMID): 30175674; ● Search Scopus @ Elsevier (DOI): 10.1080/09168451.2018.1511365

(DOI: 10.1080/09168451.2018.1511365, PubMed: 30175674) Keitaro Take, Hidehisa Fujiki, Wasana Suyotha, Junji Hayashi, Kazuyoshi Takagi, Shigekazu Yano and Mamoru Wakayama :
Enzymatic and molecular characterization of an acidic and thermostable chitinase 1 from Streptomyces thermodiastaticus HF 3-3.,
The Journal of General and Applied Microbiology, Vol.64, No.4, 190-197, 2018.

(要約): values of Chi1 for the substrate colloidal chitin were 1.23 ± 0.7 mg/mL and 6.33 ± 1.0 U/mg, respectively. Thin-layer chromatography analysis of the enzymatic reaction end products mainly detected diacetylchitobiose. We also cloned the Chi1 gene and purified the recombinant protein; the properties of the recombinant enzyme were nearly identical to those of the native enzyme. Therefore, Chi1 purified from S. thermodiastaticus HF 3-3 is unique, as it is highly stable under broad range of pH values, temperatures, and chemical exposures. Combined, these properties make this enzyme attractive for use in the industrial bioconversion of chitin.
(キーワード): Amino Acid Sequence / Base Sequence / Chitin / Chitinases / Enzyme Stability / Hydrogen-Ion Concentration / Hydrolysis / Kinetics / Molecular Weight / Recombinant Proteins / Streptomyces / Substrate Specificity / Temperature
(出版サイトへのリンク): ● Publication site (DOI): 10.2323/jgam.2017.12.002
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29709891; ● Search Scopus @ Elsevier (PMID): 29709891; ● Search Scopus @ Elsevier (DOI): 10.2323/jgam.2017.12.002

(DOI: 10.2323/jgam.2017.12.002, PubMed: 29709891) Takenori Satomura, Junji Hayashi, Hiroaki Sakamoto, Takuro Nunoura, Yoshihiro Takaki, Ken Takai, Hideto Takami, Toshihisa Ohshima, Haruhiko Sakuraba and Shin-Ichiro Suye :
d-Lactate electrochemical biosensor prepared by immobilization of thermostable dye-linked d-lactate dehydrogenase from Candidatus Caldiarchaeum subterraneum.,
Journal of Bioscience and Bioengineering, Vol.126, No.4, 425-430, 2018.

(要約): A stable d-lactate electrochemical sensing system was developed using a dye-linked d-lactate dehydrogenase (Dye-DLDH) from an uncultivated thermophilic archaeon, Candidatus Caldiarchaeum subterraneum. To develop the system, the putative gene encoding the Dye-DLDH from Ca. Caldiarchaeum subterraneum was overexpressed in Escherichia coli, and the expressed product was purified. The recombinant enzyme was a highly thermostable Dye-DLDH that retained full activity after incubation for 10 min at 70°C. The electrode for detection of d-lactate was prepared by immobilizing the thermostable Dye-DLDH and multi-walled carbon nanotube (MWCNT) within Nafion membrane. The electrocatalytic response of the electrode was clearly observed upon exposure to d-lactate. The electrode response to d-lactate was linear within the concentration range of 0.03-2.5 mM, and it showed little reduction in responsiveness after 50 days. This is the first report describing a d-lactate sensing system using a thermostable Dye-DLDH.
(キーワード): Archaea / Archaeal Proteins / Biosensing Techniques / Electrodes / Enzyme Stability / Enzymes, Immobilized / Escherichia coli / Hot Temperature / Lactate Dehydrogenases / Lactic Acid
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.jbiosc.2018.04.002
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29691195; ● Search Scopus @ Elsevier (PMID): 29691195; ● Search Scopus @ Elsevier (DOI): 10.1016/j.jbiosc.2018.04.002

(DOI: 10.1016/j.jbiosc.2018.04.002, PubMed: 29691195) 林順司, 牟田口祐太, 米田一成, 大森勇門, 大島敏久, 櫻庭春彦 :
新規分岐鎖アミノ酸ラセマーゼ，イソロイシン2-エピメラーゼの構造解析,
ビタミン, Vol.92, No.3, 121-124, 2018年.

(キーワード): branched-chain amino acid (BCAA) / isoleucine 2-epimerase, / <i>Lactobacillus buchneri</i> / pyridoxal 5'-phosphate (PLP) / crystal structure
(出版サイトへのリンク): ● Publication site (DOI): 10.20632/vso.92.3_121
(文献検索サイトへのリンク): ● CiNii @ 国立情報学研究所 (CRID): 1390001288141268224; ● Search Scopus @ Elsevier (DOI): 10.20632/vso.92.3_121

(DOI: 10.20632/vso.92.3_121, CiNii: 1390001288141268224) Saddam Md Hossain, Takahiro Tanaka, Kazuyoshi Takagi, Junji Hayashi and Mamoru Wakayama :
-derived l-amino acid ester hydrolase for synthesizing dipeptide, isoleucyl-tryptophan.,
3 Biotech, Vol.8, No.3, 2018.

(要約): HS1 (SmAEH) was homogeneous in sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) analyses, and was present as a tetramer in gel-filtration experiments. The activity of the SmAEH enzyme was then determined by monitoring the synthesis of the antihypertensive agent dipeptide isoleucyl-tryptophan (Ile-Trp) from isoleucyl methyl ester (Ile-OMe) and tryptophan (Trp). In these experiments, SmAEH had wide substrate specificity for acyl donors, such as Gly-OMe, β-Ala-OMe, Pro-OMe and Trp-OMe and Ile-OMe, and maximal activity were observed under conditions of pH 9.0 and 30 °C. SmAEH also showed the greatest stability at pH 9.0, whereas its activity was reduced by 40% after 10-min incubation at approximately 50 °C. In subsequent activity assays in the presence of various metal ions, Ag
(出版サイトへのリンク): ● Publication site (DOI): 10.1007/s13205-018-1195-1
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 29556427; ● Search Scopus @ Elsevier (PMID): 29556427; ● Search Scopus @ Elsevier (DOI): 10.1007/s13205-018-1195-1

(DOI: 10.1007/s13205-018-1195-1, PubMed: 29556427) Junji Hayashi, Tomonari Seto, Hironaga Akita, Masahiro Watanabe, Tamotsu Hoshino, Kazunari Yoneda, Toshihisa Ohshima and Haruhiko Sakuraba :
-Dependent d-Amino Acid Dehydrogenase.,
Applied and Environmental Microbiology, Vol.83, No.11, 2017.

(要約): -dependent d-amino acid dehydrogenase (DAADH) makes single-step production of d-amino acids from oxo-acid analogs and ammonia possible. We recently succeeded in creating a stable DAADH and demonstrated that it is applicable for one-step synthesis of d-amino acids, such as d-leucine and d-isoleucine. As the next step, the creation of an enzyme exhibiting different substrate specificity and higher catalytic efficiency is a key to the further development of d-amino acid production. In this study, we succeeded in creating a novel mutant exhibiting extremely high catalytic activity for phenylpyruvate amination. Structural insight into the mutant will be useful for further improvement of DAADHs.
(キーワード): Amino Acid Motifs / Amino Acid Oxidoreductases / Amino Acid Sequence / Bacterial Proteins / Binding Sites / Kinetics / Models, Molecular / Mutagenesis, Site-Directed / NADP / Planococcaceae / Protein Engineering / Substrate Specificity
(出版サイトへのリンク): ● Publication site (DOI): 10.1128/AEM.00491-17
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 28363957; ● Search Scopus @ Elsevier (PMID): 28363957; ● Search Scopus @ Elsevier (DOI): 10.1128/AEM.00491-17

(DOI: 10.1128/AEM.00491-17, PubMed: 28363957) Junji Hayashi, Yuta Mutaguchi, Yume Minemura, Noriko Nakagawa, Kazunari Yoneda, Taketo Ohmori, Toshihisa Ohshima and Haruhiko Sakuraba :
Crystal structure of the novel amino-acid racemase isoleucine 2-epimerase from Lactobacillus buchneri.,
Acta Crystallographica. Section D, Structural Biology, Vol.73, No.Pt 5, 428-437, 2017.

(要約): Crystal structures of Lactobacillus buchneri isoleucine 2-epimerase, a novel branched-chain amino-acid racemase, were determined for the enzyme in the apo form, in complex with pyridoxal 5'-phosphate (PLP), in complex with N-(5'-phosphopyridoxyl)-L-isoleucine (PLP-L-Ile) and in complex with N-(5'-phosphopyridoxyl)-D-allo-isoleucine (PLP-D-allo-Ile) at resolutions of 2.77, 1.94, 2.65 and 2.12 Å, respectively. The enzyme assembled as a tetramer, with each subunit being composed of N-terminal, C-terminal and large PLP-binding domains. The active-site cavity in the apo structure was much more solvent-accessible than that in the PLP-bound structure. This indicates that a marked structural change occurs around the active site upon binding of PLP that provides a solvent-inaccessible environment for the enzymatic reaction. The main-chain coordinates of the L. buchneri isoleucine 2-epimerase monomer showed a notable similarity to those of α-amino-ℇ-caprolactam racemase from Achromobactor obae and γ-aminobutyrate aminotransferase from Escherichia coli. However, the amino-acid residues involved in substrate binding in those two enzymes are only partially conserved in L. buchneri isoleucine 2-epimerase, which may account for the differences in substrate recognition by the three enzymes. The structures bound with reaction-intermediate analogues (PLP-L-Ile and PLP-D-allo-Ile) and site-directed mutagenesis suggest that L-isoleucine epimerization proceeds through abstraction of the α-hydrogen of the substrate by Lys280, while Asp222 serves as the catalytic residue adding an α-hydrogen to the quinonoid intermediate to form D-allo-isoleucine.
(キーワード): Amino Acid Isomerases / Amino Acid Sequence / Crystallography, X-Ray / Isoleucine / Lactobacillus / Models, Molecular / Protein Conformation / Pyridoxal Phosphate / Sequence Alignment
(出版サイトへのリンク): ● Publication site (DOI): 10.1107/S2059798317005332
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 28471367; ● Search Scopus @ Elsevier (PMID): 28471367; ● Search Scopus @ Elsevier (DOI): 10.1107/S2059798317005332

(DOI: 10.1107/S2059798317005332, PubMed: 28471367) Junji Hayashi, Kaori Yamamoto, Kazunari Yoneda, Toshihisa Ohshima and Haruhiko Sakuraba :
Unique coenzyme binding mode of hyperthermophilic archaeal sn-glycerol-1-phosphate dehydrogenase from Pyrobaculum calidifontis.,
Proteins, Vol.84, No.12, 1786-1796, 2016.

(要約): ) with NADPH was only 2.4% of that with NADH. The crystal structure of the enzyme was determined at a resolution of 2.45 Å. The asymmetric unit consisted of one homohexamer. Refinement of the structure and HPLC analysis showed the presence of the bound cofactor NADPH in subunits D, E, and F, even though it was not added in the crystallization procedure. The phosphate group at C2' of the adenine ribose of NADPH is tightly held through the five biased hydrogen bonds with Ser40 and Thr42. In comparison with the known G1PDH structure, the NADPH molecule was observed to be pushed away from the normal coenzyme binding site. Interestingly, the S40A/T42A double mutant enzyme acquired much higher reactivity than the wild-type enzyme with NADPH, which suggests that the biased interactions around the C2'-phosphate group make NADPH binding insufficient for catalysis. Our results provide a unique structural basis for coenzyme preference in NAD(P)-dependent dehydrogenases. Proteins 2016; 84:1786-1796. © 2016 Wiley Periodicals, Inc.
(キーワード): Amino Acid Motifs / Archaeal Proteins / Binding Sites / Cloning, Molecular / Coenzymes / Crystallography, X-Ray / Escherichia coli / Gene Expression / Glycerolphosphate Dehydrogenase / Hydrogen Bonding / Kinetics / Models, Molecular / NAD / NADP / Protein Binding / Protein Interaction Domains and Motifs / Protein Multimerization / Protein Structure, Secondary / Protein Subunits / Pyrobaculum / Recombinant Proteins / Thermodynamics
(出版サイトへのリンク): ● Publication site (DOI): 10.1002/prot.25161
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27616573; ● Search Scopus @ Elsevier (PMID): 27616573; ● Search Scopus @ Elsevier (DOI): 10.1002/prot.25161

(DOI: 10.1002/prot.25161, PubMed: 27616573) Tatsuya Ohshida, Junji Hayashi, Takenori Satomura, Ryushi Kawakami, Toshihisa Ohshima and Haruhiko Sakuraba :
First characterization of extremely halophilic 2-deoxy-D-ribose-5-phosphate aldolase,
Protein Expression and Purification, Vol.126, 62-68, 2016.

(要約): 2-Deoxy-d-ribose-5-phosphate aldolase (DERA) catalyzes the aldol reaction between two aldehydes and is thought to be a potential biocatalyst for the production of a variety of stereo-specific materials. A gene encoding DERA from the extreme halophilic archaeon, Haloarcula japonica, was overexpressed in Escherichia coli. The gene product was successfully purified, using procedures based on the protein's halophilicity, and characterized. The expressed enzyme was stable in a buffer containing 2 M NaCl and exhibited high thermostability, retaining more than 90% of its activity after heating at 70 °C for 10 min. The enzyme was also tolerant to high concentrations of organic solvents, such as acetonitrile and dimethylsulfoxide. Moreover, H. japonica DERA was highly resistant to a high concentration of acetaldehyde and retained about 35% of its initial activity after 5-h' exposure to 300 mM acetaldehyde at 25 °C, the conditions under which E. coli DERA is completely inactivated. The enzyme exhibited much higher activity at 25 °C than the previously characterized hyperthermophilic DERAs (Sakuraba et al., 2007). Our results suggest that the extremely halophilic DERA has high potential to serve as a biocatalyst in organic syntheses. This is the first description of the biochemical characterization of a halophilic DERA.
(徳島大学機関リポジトリ): ● Metadata: 111972
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.pep.2016.05.009
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 27215670; ● Summary page in Scopus @ Elsevier: 2-s2.0-84973496063

(徳島大学機関リポジトリ: 111972, DOI: 10.1016/j.pep.2016.05.009, PubMed: 27215670, Elsevier: Scopus) Junji Hayashi, Shota Inoue, Kwang Kim, Kazunari Yoneda, Yutaka Kawarabayasi, Toshihisa Ohshima and Haruhiko Sakuraba :
Crystal Structures of a Hyperthermophilic Archaeal Homoserine Dehydrogenase Suggest a Novel Cofactor Binding Mode for Oxidoreductases.,
Scientific Reports, Vol.5, 2015.

(要約): NAD(P)-dependent dehydrogenases differ according to their coenzyme preference: some prefer NAD, others NADP, and still others exhibit dual cofactor specificity. The structure of a newly identified archaeal homoserine dehydrogenase showed this enzyme to have a strong preference for NADP. However, NADP did not act as a cofactor with this enzyme, but as a strong inhibitor of NAD-dependent homoserine oxidation. Structural analysis and site-directed mutagenesis showed that the large number of interactions between the cofactor and the enzyme are responsible for the lack of reactivity of the enzyme towards NADP. This observation suggests this enzyme exhibits a new variation on cofactor binding to a dehydrogenase: very strong NADP binding that acts as an obstacle to NAD(P)-dependent dehydrogenase catalytic activity.
(キーワード): Amino Acid Sequence / Archaea / Binding Sites / Catalysis / Homoserine Dehydrogenase / Kinetics / Models, Molecular / Molecular Sequence Data / NADP / Oxidoreductases / Protein Binding / Protein Conformation / Sequence Alignment / Substrate Specificity
(出版サイトへのリンク): ● Publication site (DOI): 10.1038/srep11674
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 26154028; ● Search Scopus @ Elsevier (PMID): 26154028; ● Search Scopus @ Elsevier (DOI): 10.1038/srep11674

(DOI: 10.1038/srep11674, PubMed: 26154028) Shin-ichi Sakasegawa, Junji Hayashi, Yoshiaki Ikura, Shigeru Ueda, Shigeyuki Imamura, Toshihiko Kumazawa, Atsuhisa Nishimura, Toshihisa Ohshima and Haruhiko Sakuraba :
Colorimetric inorganic pyrophosphate assay using a double cycling enzymatic method.,
Analytical Biochemistry: Methods in the Biological Sciences, Vol.416, No.1, 61-66, 2011.

(要約): Pyruvate phosphate dikinase (PPDK, EC 2.7.9.1) from the hyperthermophile Thermotoga maritima was biochemically characterized with the aim of establishing a colorimetric assay for inorganic pyrophosphate (PPi). When heterologously expressed in Escherichia coli, T. maritima PPDK (TmPPDK) was far more stable any other PPDK reported so far: it retained >90% of its activity after incubation for 1 h at 80°C, and >80% of its activity after incubation for 20 min at pHs ranging from 6.5 to 10.5 (50°C). In contrast to PPDKs from protozoa and plants, this TmPPDK showed very long-term stability at low temperature: full activity was retained even after storage for at least 2 years at 4°C. TmPPDK was successfully applied to a novel colorimetric PPi assay, which employed (i) a PPi cycling reaction using TmPPDK and nicotinamide mononucleotide adenylyltransferase (EC 2.7.7.1) from Saccharomyces cerevisiae and (ii) a NAD cycling reaction to accumulate reduced nitroblue tetrazolium (diformazan). This enabled detection of 0.2 μM PPi, making this method applicable for preliminary measurement of PPi levels in PCR products in an automatic clinical analyzer.
(キーワード): Colorimetry / Diphosphates / Nicotinamide-Nucleotide Adenylyltransferase / Pyruvate, Orthophosphate Dikinase / Saccharomyces cerevisiae / Thermotoga maritima
(出版サイトへのリンク): ● Publication site (DOI): 10.1016/j.ab.2011.04.043
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 21621500; ● Search Scopus @ Elsevier (PMID): 21621500; ● Search Scopus @ Elsevier (DOI): 10.1016/j.ab.2011.04.043

(DOI: 10.1016/j.ab.2011.04.043, PubMed: 21621500)

MISC

研究者総覧に該当データはありませんでした。

総説・解説

Hironaga Akita, Junji Hayashi, Haruhiko Sakuraba and Toshihisa Ohshima :
Artificial Thermostable D-Amino Acid Dehydrogenase: Creation and Application.,
Frontiers in Microbiology, Vol.9, Aug. 2018.

(要約): -DAPDH and D-AADH, and designed mutations based on the information obtained made it possible to markedly enhance enzyme activity and to create D-AADH homologs with desired reactivity profiles. The methods described here may be an effective approach to artificial creation of biotechnologically useful enzymes.
(徳島大学機関リポジトリ): ● Metadata: 115255
(出版サイトへのリンク): ● Publication site (DOI): 10.3389/fmicb.2018.01760
(文献検索サイトへのリンク): ● PubMed @ National Institutes of Health, US National Library of Medicine (PMID): 30123202; ● Search Scopus @ Elsevier (PMID): 30123202; ● Search Scopus @ Elsevier (DOI): 10.3389/fmicb.2018.01760

(徳島大学機関リポジトリ: 115255, DOI: 10.3389/fmicb.2018.01760, PubMed: 30123202)

講演・発表

Nakamoto Akira, Umekawa Midori, Junji Hayashi and Wakayama Mamoru :
Construction of D-amino acid derivative production system using Saccharomyces cerevisiae,
New Zealand Microbiological Society Conference 2017, Nov. 2017. Ogiyama Daiki, Wakayama Mamoru and Junji Hayashi :
Lactovinegar production by ethanol fermentation of whey using Zymomonas mobile,
New Zealand Microbiological Society Conference 2017, Nov. 2017. Ohshima Toshihisa, Junji Hayashi, Akita Hironaga and Sakuraba Haruhiko :
Structuralbased engineering of an artificially created NADP-dependent D-amino acid dehydrogenase,
The 3rd International Conference of D-Amino Acid Research 2017, Jul. 2017. Take Keitaro, Fujiki Hidehisa, Suyotha Wasana, Takagi Kazuyoshi, Junji Hayashi and Wakayama Mamoru :
Thermostable and acidic chitinase obtained from Streptomyces thermodiastaticus,
New Zealand Microbiological Society Conference 2017, 2017. Ishiyama Shinnosuke, Yamahata Naoki, Junji Hayashi and Wakayama Mamoru :
Development of a new type of liquor made from whey-selections of Aspergillus species and raw materials for malt, and examination of brewing conditions,
New Zealand Microbiological Society Conference 2017, 2017. Junji Hayashi, Ohshima Toshihisa and Sakuraba Haruhiko :
Unique cofactor binding mode of homoserine dehydrogenase from hyperthermophilic archaeon Pyrococcus horikoshii,
Extremophiles 2016, Sep. 2016. 林順司 :
酵素の特異性を立体構造から理解する,
日本農芸化学会学会創立 100 周年記念第 38 回若手研究者シンポジウム, 2023年7月. 川上竜巳, 林順司, 櫻庭春彦, 大島敏久 :
超好熱アーキアPyrococcus furiosusのPLP依存性アミノ酸ラセマーゼの機能と構造の特徴,
2023年度日本ビタミン学会大会, 2023年6月. 櫻庭春彦, 高見直樹, 林順司, 米田一成, 大森勇門, 大島敏久 :
Pseudomonas veronii由来L-アルギニン脱水素酵素の構造解析,
第470回ビタミンB研究協議会, 2023年3月. 山﨑義輝, 山下晶央, 佐々木千鶴, 林順司, 川上竜巳, 金丸芳 :
鳴門産スジアオノリ(Ulva prolifera)の志賀毒素吸着活性,
日本農芸化学会中四国支部第64 回講演会要旨集, 2023年1月.

(キーワード): E. coli O157 / Siga Toxin / Ulva prolifera / adsorption

山下晶央, 山﨑義輝, 佐々木千鶴, 林順司, 川上竜巳, 金丸芳 :
アラメ(Eisenia bicyclis)によるEHEC O157 産生志賀毒素吸着,
日本農芸化学会中四国支部大会講演要旨集, 37, 2022年9月.

(キーワード): E. coli O157 / Siga Toxin / Eisenia bicyclis / adsorption

田中保, Md Hanif Ali, 小林美佑, Rumana Yesmin Hasi, 粟飯原睦美, 林順司, 川上竜巳 :
極長鎖脂肪酸による毒性とその解毒装置としてのペルオキシソームの役割,
脂質栄養学, Vol.31, No.2, 143, 2022年9月. 佐々木千鶴, 新居美香, 林順司, 金丸芳 :
ワカメ非可食部の資源化を目的とした連続水熱処理による有用物質生産法の開発,
日本食品工学会2022年度大会, 岡山, 2022年9月. 中永美樹, 川上竜巳, 林順司, 大島敏久, 櫻庭春彦 :
超好熱性アーキア Thermococcus profundus 由来色素依存性 L -プロリン脱水素酵素に関する研究,
日本農芸化学会2022年度中四国支部大会 2022年9月22日, 2022年9月. 林順司, 玉谷優奈, 小川詩緒里, 川上竜巳, 里村武範, 大島敏久, 櫻庭春彦 :
高度耐熱性FAD依存性D-乳酸脱水素酵素のX線結晶構造解析,
日本農芸化学会2022年度中四国支部大会(第63回講演会), 2022年9月. Rumana Yesmin Hasi, Naohiro Imura, Toshiki Ishikawa, Hiroyuki Imai, Yoshimichi Takai, Hanif Ali, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru and Tamotsu Tanaka :
Distribution and characterization of glycosylinositol phosphoceramide specific phospholipase D in Brassica plants,
第64回日本脂質生化学会, Vol.64, 272-275, Jun. 2022. Hanif Ali, Miyu Kobayashi, Katsuya Morito, Rumana Yesmin Hasi, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru, Koichiro Tsuchiya, Kazunori Sango and Tamotsu Tanaka :
Peroxisomes attenuate lipotoxicity of very-long-chain fatty acids,
第64回日本脂質生化学会, Vol.64, 43-46, Jun. 2022. 林順司, 大志田達也, 川上竜巳, 里村武範, 若山守, 大島敏久, 櫻庭春彦 :
超好熱アーキア由来色素依存性D-乳酸脱水素酵素の構造解析,
日本ビタミン学会第74回大会, 2022年6月. Hanif Ali, Miyu Kobayashi, Katsuya Morito, Rumana Yesmin Hasi, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru, Koichiro Tsuchiya, Kazunori Sango and Tamotsu Tanaka :
Metabolism and biological effect of very-long-chain fatty acid in peroxisome-deficient cells,
第63回日本生化学中国・四国支部例会, May 2022. Hanif Ali, Katsuya Morito, Rumana Yesmin Hasi, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru, Koichiro Tsuchiya, Kazunori Sango and Tamotsu Tanaka :
Characterization of uptake and metabolism of very-long-chain fatty acid in peroxisome-deficient CHO cells,
第94回日本生化学大会, Nov. 2021. Rumana Yesmin Hasi, Naohiro Imura, Toshiki Ishikawa, Hiroyuki Imai, Yoshimichi Takai, Hanif Ali, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru and Tamotsu Tanaka :
Production of phytoceramide 1- phosphate and inositol glycan by glycosylinositol phosphoceramide specific phospholipase D activity in plants,
第94回日本生化学大会, Nov. 2021. 櫻庭春彦, 大志田達也, 川上竜巳, 林順司, 米田一成, 大島敏久 :
好熱アーキアPyrococcus horikoshii 由来オルニチンアミノトランスフェラーゼの構造解析,
第465回ビタミンB研究協議会, 2021年11月. Hanif Ali, Katsuya Morito, Rumana Yesmin Hasi, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru, Koichiro Tsuchiya, Kazunori Sango and Tamotsu Tanaka :
Characterization of uptake and metabolism of very-long-chain fatty acid in peroxisome-deficient CHO cells,
第62回日本生化学中国・四国支部例会, Sep. 2021. Rumana Yesmin Hasi, Naohiro Imura, Toshiki Ishikawa, Hiroyuki Imai, Yoshimichi Takai, Hanif Ali, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru and Tamotsu Tanaka :
Production of phytoceramide 1- phosphate and inositol glycan by glycosylinositol phosphoceramide specific phospholipase D activity in plants,
第62回日本生化学中国・四国支部例会, Sep. 2021. Hanif Ali, Katsuya Morito, Rumana Yesmin Hasi, Mutsumi Aihara, Junji Hayashi, Ryushi Kawakami, Kaori Kanemaru, Koichiro Tsuchiya and Tamotsu Tanaka :
Uptake and metabolism of very-long-chain fatty acid in animal cells,
第63回日本脂質生化学会, Jun. 2021. 林順司, 大志田達也, 川上竜巳, 里村武範, 若山守, 大島敏久, 櫻庭春彦 :
超好熱菌由来色素依存性D-乳酸脱水素酵素のX線結晶構造解析,
日本農芸化学会中四国支部第58回講演会, 2021年1月. 川上竜巳, 林順司, 木下千夏, 河瀬智紀, 佐藤樹夫 :
超好熱アーキア Thermococcus litoralis DSM5473 のアミノ酸ラセマーゼ BAR2 の機能解析,
日本ビタミン学会第 72 回大会, 2020年6月. Intuy Rattanaporn, Takafumi Itoh, Wasana Suyotha, Junji Hayashi, Shigekazu Yano, Koki Makabe, Yosuke Toyotake, Mamoru Wakayama and Takao Hibi :
Reaction mechanism and crystallization of catalytic α-1,3-glucanase from Paenibacillus glycanilyticus FH11,
Japan Society for Bioscience, Biotechnology, and Agrochemistry, Mar. 2020. 大志田達也, 林順司, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキアPyrobaculum aerophilum由来新規ガラクトース1-リン酸ウリジリルトランスフェラーゼに関する研究,
日本農芸化学会2020年度大会, 2020年3月. Rattanaporn Intuy, Itoh Takafumi, Suyotha Wasana, 林順司, Yano Shigekazu, Makabe Koki, Toyotake Yosuke, Wakayama Mamoru, Hibi Takao :
Paenibacillus glycanilyticus FH11由来α-1,3-グルカナーゼ触媒ドメインの反応機構と結晶化,
日本農芸化学会2020年度大会, 2020年3月. 深瀬葵, 林順司, 高木一好, 豊竹洋佑, 若山守 :
Thermococcus kodakaraensis由来組換えβ-アスパルチルトランスペプチダーゼの諸性質の検討,
日本生物工学会九州支部長崎大会, 2019年12月. 八田誠二, 野々村祐輝, 林順司, 高木一好, 豊竹洋佑, 若山守 :
Pseudomonas aeruginosa PAO1由来γ-グルタミルトランスペプチダーゼ IIのC末端領域の活性および安定性に及ぼす影響,
日本生物工学会九州支部長崎大会, 2019年12月. 能勢晶暉, 西尾啓汰, 林順司, 豊竹洋祐, 若山守 :
脱脂菜種を原料に用いた酪醤醸造の検討,
日本生物工学会九州支部長崎大会, 2019年12月. 西田典央, 林順司, 豊竹洋祐, 林順司, 若山守 :
Streptomyces thermodiastaticus HF3-3由来組換えβ-1,3-glucanaseの発現系の構築と諸性質の検討,
日本生物工学会九州支部長崎大会, 2019年12月. 田中悠磨, 林順司, 豊竹洋祐, 林順司, 若山守 :
Komagataeibacter xylinus由来Superoxide dismutaseの融合型酵素の発現ならびに諸性質検討,
日本生物工学会九州支部長崎大会, 2019年12月. 加藤耀, 立花萌々子, 山畑直樹, 林順司, 豊竹洋祐, 若山守 :
Kluyveromyces lactisのRIM11欠損株の発酵特性,
日本生物工学会九州支部長崎大会, 2019年12月. 大西敦也, 田中貴大, 林順司, 豊竹洋佑, 若山守 :
Elizabethkingia sp. TT1由来L-アミノ酸エステラーゼを用いたVal-Gly合成,
日本生物工学会九州支部長崎大会, 2019年12月. 大志田達也, 林順司, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキア Pyrobaculum aerophilum 由来新規ガラクトース 1-リン酸ウリジリルトランスフェラーゼの構造解析,
日本農芸化学会 2019 年度西日本・中四国支部合同沖縄大会, 2019年11月. 田中保, Rumana Hasi Yesmin, 森戸克弥, 小暮健太朗, 林順司, 川上竜巳, 金丸芳, 今井博之, 石川寿樹 :
グリコシルイノシトールホスホセラミドの単離法の開発,
第12回セラミド研究会学術集会, 2019年10月. 田中保, 森戸克弥, Rumana Hasi Yesmin, 林順司, 川上竜巳, 金丸芳, 若山睦, 近藤千恵子, 福田達也, 小暮健太朗 :
食品素材に含まれるセラミドの簡便な定量方法,
日本脂質栄養学会第28回大会, 2019年9月. Phumsombat Putthapong, Sano Chiharu, Hibi Takao, Itoh Takafumi, 林順司, Toyotake Yosuke, Wakayama Mamoru :
Immobilization and site directed mutagenesis of Trp525 residue of γ-Glutamyltranspeptidase from Pseudomonas nitroreducens (PnGGT) to improve Theanine production,
The Society for Biotechnology, Japan, 2019年9月. 池添浩輝, 林順司, 豊竹洋佑, 若山守 :
Pseudomonas nitroreducens由来γ-グルタミルトランスペプチダーゼの構造と機能に関する研究,
日本生物工学会, 2019年9月. 八田誠二, 野々村祐輝, 林順司, 高木一好, 豊竹洋佑, 若山守 :
Pseudomonas aeruginosa PAO1株由来γ-グルタミルトランスペプチダーゼII C末端領域の活性および安定性に及ぼす影響,
日本生物工学会, 2019年9月. 深瀬葵, 林順司, 高木一好, 豊竹洋佑, 若山守 :
Thermococcus kodakarensis由来β-アスパルチルトランスペプチダーゼ遺伝子のクローニング，発現および諸性質の解明,
日本生物工学会, 2019年9月. 山田泰蔵, 林順司, 豊竹洋佑, 若山守 :
アスパラギン合成酵素を用いたβ-アスパルチル化合物合成法の検討,
日本生物工学会, 2019年9月. 大西敦也, 田中貴大, 林順司, 豊竹洋佑, 若山守 :
Elizabethkingia sp. TT1由来組換えL-アミノ酸エステラーゼの高発現系の構築と菌体反応によるVal-Gly合成,
日本生物工学会, 2019年9月. 櫻庭春彦, 大志田達也, 林順司, 米田一成, 大島敏久 :
超好熱菌由来ガラクトース1-リン酸ウリジリルトランスフェラーゼの構造解析,
第457回ビタミンB研究協議会, 2019年8月. 長濱伸哉, 林順司, 里村武範, 若山守, 大島敏久, 櫻庭春彦 :
D-乳酸分析用酵素の探索と機能解析,
日本農芸化学会関西支部例会第507回講演会, 2019年2月. 古川慎, 林順司, 若山守 :
食品中アクリルアミド低減に向けたL-アスパラギナーゼ高生産乳酸菌の探索及び諸性質の検討,
第25回日本生物工学会九州支部鹿児島大会, 2018年12月. 中本侃, 林順司, 若山守 :
出芽酵母によるD-アミノ酸誘導体の発酵生産法の構築,
第25回日本生物工学会九州支部鹿児島大会, 2018年12月. 石山真乃介, 山畑直樹, 林順司, 若山守 :
ホエイを原料とする新規酒類の開発,
第25回日本生物工学会九州支部鹿児島大会, 2018年12月. 服部俊, 三品裕太, 林順司, 若山守 :
新規調味料「酪醬」の醸造法の検討,
第25回日本生物工学会九州支部鹿児島大会, 2018年12月. 矢幡翔太, 林順司, 若山守 :
Streptomyces属由来α-1,3-グルカナーゼに関する研究,
第25回日本生物工学会九州支部鹿児島大会, 2018年12月. 櫻庭春彦, 林順司, 秋田紘長, 大森勇門, 大島敏久 :
D-アミノ酸脱水素酵素の構造情報に基づく基質特異性の改変,
第70回日本生物工学会大会, 2018年9月. 牧慶子, 田中貴大, 高木一好, 林順司, 若山守 :
L -アミノ酸エステラーゼによる血管拡張作用ペプチド( T r p - H i s )の酵素合成に関する研究,
日本農芸化学会関西支部第5 0 2 回講演会, 2018年2月. 林順司, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキア由来ホモセリン脱水素酵素に見出した新奇な補酵素結合様式．,
日本農芸化学会関西支部第5 0 2 回講演会, 2018年2月. 池尻篤生, 藤原祥子, 林順司, 櫻庭春彦, 田中直孝, 田淵光昭 :
青枯病菌エフェクター RipAY の宿主チオレドキシン依存的活性化機構の解析,
日本農芸化学会2017年度合同大阪大会, 2017年9月. 林順司, 山本香李, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキア Pyrobaculum calidifontis 由来グリセロール 1-リン酸脱水素酵素に見出した新規補酵素結合様式,
日本農芸化学会2017年度合同大阪大会, 2017年9月. 林順司, 山本香李, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキア Pyrobaculum calidifontis 由来グリセロール 1-リン酸脱水素酵素に見出した新規補酵素結合様式,
日本農芸化学会中四国支部例会, 2017年9月. 古場康平, 林順司, 大志田達也, 安部展洋, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱性細菌 Thermotoga maritima 由来アスパラギン酸キナーゼ/ホモセリンデヒドロゲナーゼ融合酵素(AK/HseDH)の分子特性,
日本農芸化学会2017年度合同大阪大会, 2017年9月. 林順司, 峰村結芽, 牟田口祐太, 米田一成, 大森勇門, 大島敏久, 櫻庭春彦 :
新規分岐鎖アミノ酸ラセマーゼ，イソロイシン 2-エピメラーゼの構造解析,
日本ビタミン学会第69回大会, 2017年6月. 花川大地, 林順司, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキア Pyrobaculum aerophilum 由来 galactose-1-phosphate uridylyltransferase の構造解析,
日本農芸化学会2017年度大会, 2017年3月. 大志田達也, 林順司, 里村武範, 川上竜巳, 大島敏久, 櫻庭春彦 :
高度好塩菌 Haloarcula japonica 由来 2-デオキシリボース 5-リン酸アルドラーゼに関する研究,
日本農芸化学会2017年度大会, 2017年3月. 古場康平, 林順司, 安部展洋, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱性細菌 Thermotoga maritima 由来アスパラギン酸キナーゼ / ホモセリンデヒドロゲナーゼ融合酵素(AK/HseDH)の機能解析,
日本農芸化学会2017年度大会, 2017年3月. 林順司, 峰村結芽, 牟田口祐太, 大森勇門, 大島敏久, 櫻庭春彦 :
新規アミノ酸ラセマーゼ，イソロイシン 2-エピメラーゼの構造解析,
第12回 D-アミノ酸学会学術講演会, 2016年9月. 大志田達也, 林順司, 里村武範, 川上竜巳, 大島敏久, 櫻庭春彦 :
高度好塩菌 Haloarcula japonica由来2-デオキシリボース-5-リン酸アルドラーゼに関する研究,
日本農芸化学会2016年度中四国支部大会, 2016年9月. 櫻庭春彦, 林順司, 牟田口祐太, 大森勇門, 大島敏久 :
Lactobacillus buchneri由来分岐鎖アミノ酸ラセマーゼの構造解析,
第445回ビタミンB研究協議会, 2016年8月. 林順司, 牟田口祐太, 大森勇門, 大島敏久, 櫻庭春彦 :
新規アミノ酸ラセマーゼ，イソロイシン 2-エピメラーゼの構造解析,
日本ビタミン学会第68回大会, 2016年6月. 櫻庭春彦, 林順司, 山本香李, 大島敏久 :
好熱アーキア由来グリセロール1-リン酸デヒドロゲナーゼの構造解析,
第443回ビタミンB研究協議会, 2016年1月. 瀬戸智成, 秋田紘長, 林順司, 大島敏久, 櫻庭春彦 :
耐熱性D-アミノ酸脱水素酵素の機能，構造解析,
日本農芸化学会中四国支部例会, 2016年1月. 林順司, 井上翔太, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキア由来ホモセリンデヒドロゲナーゼが示す新奇な補酵素結合様式,
日本農芸化学会中四国支部例会, 2016年1月. 山本香李, 林順司, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキアPyrobaculum calidifontis由来グリセロール-1-リン酸デヒドロゲナーゼの機能構造解析,
日本農芸化学会中四国支部例会, 2016年1月. 林順司, 牟田口祐太, 大森勇門, 大島敏久, 櫻庭春彦 :
新規アミノ酸ラセマーゼ，イソロイシン 2-エピメラーゼの構造解析,
2015年度酵素・補酵素研究会, 2015年7月. 林順司, 井上翔太, 大島敏久, 櫻庭春彦 :
超好熱アーキア由来ホモセリンデヒドロゲナーゼが示す新奇な補酵素結合様式,
第440回ビタミンB研究協議会, 2015年6月. 津島悠斗, 林順司, 米田一成, 大島敏久, 櫻庭春彦 :
超好熱アーキアAeropyrum pernix由来D-乳酸デヒドロゲナーゼの結晶構造解析,
日本農芸化学会中四国支部大会, 2014年9月. 林順司, 酒瀬川信一, 櫻庭春彦, 大島敏久 :
超好熱細菌Thermotoga maritima由来ピルビン酸オルトリン酸ジキナーゼの性質,
日本農芸化学会中四国支部大会, 2008年9月.

研究会・報告書: 研究者総覧に該当データはありませんでした。

特許: 櫻庭春彦, 林順司, 酒瀬川信一 : 新規なピルベートオルトホスフェートジキナーゼ，及びその製造方法, 特願2008-152403 (2008年6月), 特開2009-17876 (2009年1月), 特許第5352788号 (2013年9月).
作品: 研究者総覧に該当データはありませんでした。
補助金・競争的資金: 色素依存性D-乳酸脱水素酵素の立体構造に基づく新規有用酵素の創製 (研究課題/領域番号: 23K14137 )
担子菌特異的カルボキシルメチルトランスフェラーゼの反応機作の解明 (研究課題/領域番号: 23K05337 )
耐熱性色素依存性D-乳酸脱水素酵素の機能・構造解析とバイオセンサー素子への応用 (研究課題/領域番号: 18K14394 )
耐熱性色素依存性D-乳酸脱水素酵素の機能・構造解析とバイオセンサー素子への応用 (研究課題/領域番号: 17H07257 )
研究者番号（20802101）による検索

その他: 研究者総覧に該当データはありませんでした。

研究者総覧で最新データを確認する

2024年4月19日更新

専門分野・研究分野: 酵素工学 (Enzyme Engineering)
構造生物学 (Structural Biology)
所属学会・所属協会: 日本生物工学会
日本ビタミン学会
日本農芸化学会
委員歴・役員歴: 研究者総覧に該当データはありませんでした。
受賞: 2022年2月, 2021 年度ティーチャー・オブ・ジ・イヤー(優秀教員) (徳島大学生物資源産業学部)
活動: 研究者総覧に該当データはありませんでした。

リサーチマップで最新データを確認するＪグローバルで最新データを確認する

2024年4月14日更新

2024年4月20日更新

Ｊグローバル

Jグローバル最終確認日: 2024/4/20 01:28
氏名（漢字）: 林順司
氏名（フリガナ）: ハヤシジュンジ
氏名（英字）: JUNJI HAYASHI
所属機関: 徳島大学大学院

リサーチマップ

researchmap最終確認日: 2024/4/14 01:53
氏名（漢字）: 林順司
氏名（フリガナ）: ハヤシジュンジ
氏名（英字）: JUNJI HAYASHI
プロフィール: リサーチマップAPIで取得できませんでした。
登録日時: 2017/6/22 16:02
更新日時: 2024/2/1 13:20
アバター画像URI: リサーチマップAPIで取得できませんでした。
ハンドル: リサーチマップAPIで取得できませんでした。
eメール: リサーチマップAPIで取得できませんでした。
eメール（その他）: リサーチマップAPIで取得できませんでした。
携帯メール: リサーチマップAPIで取得できませんでした。
性別: リサーチマップAPIで取得できませんでした。
没年月日: リサーチマップAPIで取得できませんでした。
所属ID: 0344000000
所属: 徳島大学大学院
部署: 社会産業理工学研究部
職名: リサーチマップAPIで取得できませんでした。
学位: 博士（農学）
学位授与機関: 愛媛大学
URL: リサーチマップAPIで取得できませんでした。
科研費研究者番号: リサーチマップAPIで取得できませんでした。
Google Analytics ID: リサーチマップAPIで取得できませんでした。
ORCID ID: リサーチマップAPIで取得できませんでした。
その他の所属ID: リサーチマップAPIで取得できませんでした。
その他の所属名: リサーチマップAPIで取得できませんでした。
その他の所属部署: リサーチマップAPIで取得できませんでした。
その他の所属職名: リサーチマップAPIで取得できませんでした。
最近のエントリー: リサーチマップAPIで取得できませんでした。
Read会員ID: リサーチマップAPIで取得できませんでした。
経歴
受賞: リサーチマップAPIで取得できませんでした。
Misc
論文
講演・口頭発表等: リサーチマップAPIで取得できませんでした。
書籍等出版物: リサーチマップAPIで取得できませんでした。
研究キーワード
研究分野
所属学協会
担当経験のある科目
その他: リサーチマップAPIで取得できませんでした。
Works: リサーチマップAPIで取得できませんでした。
特許
学歴
委員歴: リサーチマップAPIで取得できませんでした。
社会貢献活動: リサーチマップAPIで取得できませんでした。

ＫＡＫＥＮで最新データを確認する

2024年4月20日更新

研究者番号: 20802101

所属（現在）: 2024/4/1 : 徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 講師

所属（過去の研究課題 情報に基づく）*注記: 2023/4/1 : 徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 講師
2021/4/1 : 徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 講師
2019/4/1 – 2020/4/1 : 徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 助教
2017/4/1 – 2018/4/1 : 立命館大学, 生命科学部, 助教

審査区分/研究分野

研究代表者

生物系 / 農学 / 農芸化学 / 応用生物化学
小区分38030:応用生物化学関連
小区分43020:構造生物化学関連

研究代表者以外

小区分40020:木質科学関連

キーワード

研究代表者

酵素工学 / 酵素 / 好熱菌 / 構造生物学 / 超好熱菌 / 応用生物化学 / FAD / 補酵素特異性 / 脱水素酵素

研究代表者以外

ケイ皮酸メチル / Tricholoma matsutake / カルボキシルメチルトランスフェラーゼ

研究課題研究成果共同研究者

「研究課題をさがす」で表示
テキスト（CSV）で出力

テキスト（CSV）で出力

2020年5月1日

高効率分解処理システム構築のための生分解性高機能バイオプラスチックの創製と評価

浅田元子佐々木千鶴異島優林順司大西康太

2020年9月18日

生物の代謝酵素を利用した環境に優しい次世代地盤改良技術「バイオグラウト」の開発

平田章松尾義則真壁和裕 W. 渡部稔田中保金丸芳川上竜巳林順司

研究者を探す

林 順司

Ｊグローバル

リサーチマップ

研究代表者

研究代表者以外

研究代表者

研究代表者以外

林順司