Theoretical elucidations of the reactions and the reaction-control mechanisms in enzymes
Project/Area Number |
24750007
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Physical chemistry
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Research Institution | University of Tsukuba |
Principal Investigator |
SHOJI Mitsuo 筑波大学, 数理物質系, 助教 (00593550)
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Project Period (FY) |
2012-04-01 – 2014-03-31
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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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Keywords | QM/MM / 酵素 / 反応機構 / トレオニン合成酵素 / 亜硝酸還元酵素 / 反応制御 / スーパーコンピュータ / MD / UV / 自由エネルギー |
Research Abstract |
Enzymes catalyze important chemical reactions in living systems. The enzyme reactions for material formations and energy conversions are highly efficient. Simple reactions are clarified by theoretical analyses, however, complicated reactions in many important enzymes are still unclear. Therefore, reactions of threonine synthase (ThrS), nitrite reductase (NiR), nitric oxide reductase (NOR) and DNA topoisomerase (Topo) are investigated by a mixed quantum mechanical and molecular mechanical (QM/MM) method. We utilized supercomputers and massive parallel simulations were performed. We elucidated the reaction mechanism by investigations for the protonation states, hydrogen-bonding network, existence of waters and possible reaction pathways.
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Report
(3 results)
Research Products
(110 results)
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[Journal Article] A QM/MM Study of the l-Threonine Formation Reaction of Threonine Synthase : Implications into the Mechanism of the Reaction Specificity2014
Author(s)
M. Shoji, K. Hanaoka, Y. Ujiie, W. Tanaka, D. Kondo, H. Umeda, Y. Kamoshida, M. Kayanuma, K. Kamiya, K. Shiraishi, Y. Machida, T. Murakawa, H. Hayashi
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Journal Title
Journal of the American Chemical Society
Volume: 136(12)
Pages: 4525-4533
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[Journal Article] A QM/MM Study of the l-Threonine Formation Reaction of Threonine Synthase: Implications into the Mechanism of the Reaction Specificity.2014
Author(s)
Shoji, M., Hanaoka, K., Ujiie, Y., Tanaka, W., Kondo, D., Umeda, H., Kamoshida, Y., Kayanuma, M., Kamiya, K., Shiraishi, K., Machida, Y., Murakawa, T., and Hayashi, H.
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Journal Title
J. Am. Chem. Soc.
Volume: 136
Issue: 12
Pages: 4525-4533
DOI
Related Report
Peer Reviewed
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[Journal Article] Full Geometry Optimizations of the Mixed-Valence CaMn4O4X(H2O) 4 (X=OH or O) Cluster in OEC of PS II: Degree of Symmetry Breaking of the Labile Mn-X-Mn Bond Revealed by Several Hybrid DFT Calculations2013
Author(s)
K. Yamaguchi, H. Isobe, S. Yamanaka, T. Saito, K. Kanda, M. Shoji, Y. Umena, K. Kawakami, J.-R.. Shen, N. Kamiya, M. Okumura
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Journal Title
International Journal of Quantum Chemistry
Volume: 113
Issue: 4
Pages: 525-541
DOI
Related Report
Peer Reviewed
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[Journal Article] The Nature of chemical bonds of the CaMn4O5cluster in oxygen evolving complex of photosystem II. Jahn-Teller distortion and its suppression by Ca doping in cubane structures2013
Author(s)
K. Yamaguchi, S. Yamanaka, H. Isobe, T. Saito, K. Kanda, Y. Umena, K. Kawakami, J. -R. Shen, N. Kamiya, M. Okumura, H. Nakamura, M. Shoji and Y. Yoshioka
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Journal Title
Internat. J. Quantum Chem
Volume: 113
Issue: 4
Pages: 453-473
DOI
Related Report
Peer Reviewed
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[Presentation] Theoretical Investigation on the Substrate Specificity of Uridine-cytidine Kinase2013
Author(s)
W. Tanaka, Y. Ujiie, K. Hanaoka, M. Shoji, M. Kayanuma, K. Kamiya, T. Ishida, F. Tomoike, S. Kuramitsu, K. Shiraishi
Organizer
ISTCP-8
Place of Presentation
Budapest, Hungary(poster)
Year and Date
2013-08-25
Related Report
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[Presentation] Molecular dynamics study on the substrate binding free energy of Threonine Synthase2013
Author(s)
Y. Ujiie, W. Tanaka, K. Hanaoka, M. Shoji, M. Kayanuma, K. Kamiya, T. Ishida, K. Shiraishi, Y. Machida, T. Murakawa, H. Hayashi
Organizer
ISTCP-8
Place of Presentation
Budapest, Hungary(poster)
Year and Date
2013-08-25
Related Report
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[Presentation] トレオニン合成酵素における反応特異性決定過程の理論解明2013
Author(s)
庄司光男, 花岡恭平, 氏家謙, 田中弥, 梅田宏明, 栢沼愛, 神谷克政, 白石賢二, 町田康博, 村川武志, 林秀行
Organizer
蛋白質科学会年会
Place of Presentation
鳥取(口頭(若手奨励賞候補)+ポスター)
Year and Date
2013-06-13
Related Report
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[Presentation]2013
Author(s)
M. Shoji, K. Hanaoka, Y. Ujiie, W. Tanaka, M. Kayanuma, H. Umeda,Y. Machida, T. Murakawa, H. Hayashi
Organizer
BIT's 4th Symposium on Enzymes and Biocatalysis 2013 (SEB-2013)
Place of Presentation
Nanjing, Chaina(oral)
Year and Date
2013-04-26
Related Report
Invited
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[Presentation] トレオニン合成酵素における反応特異性についての理論的解明2013
Author(s)
庄司光男, 氏家謙, 田中弥, 花岡恭平, 梅田宏明, 栢沼愛, 神谷克政, 白石賢二, 町田康博, 村川武志, 林秀行
Organizer
第86回日本生化学会大会
Place of Presentation
横浜(口頭+ポスター)
Related Report
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[Presentation] トレオニン合成酵素における反応特異性についての理論的解明2013
Author(s)
庄司 光男, 氏家 謙, 田中 弥, 花岡 恭平, 梅田 梅田, 栢沼 愛, 神谷 克政, 白石 賢二, 町田 康博, 村川 武志, 林 秀行
Organizer
第86回日本生化学会大会
Place of Presentation
パシフィコ横浜
Related Report
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[Presentation] トレオニン合成酵素におけるリン酸脱離以降の反応機構についての理論的解明2012
Author(s)
庄司光男, 花岡恭平, 近藤大生, 田口真彦, 栢沼愛, 梅田宏明, 鴨志田良和, 神谷克政, 白石賢二, 村川武志, 林秀行
Organizer
第85回日本生化学会大会
Place of Presentation
福岡国際会議場(ポスター)
Year and Date
2012-12-16
Related Report
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[Presentation]2012
Author(s)
佐藤皓允, 田口真彦, 庄司光男
Organizer
第7回夏の学校宇宙ライフサイエンス若手の会
Place of Presentation
(ポスター発表)
Year and Date
2012-08-25
Related Report
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[Presentation] トレオニン合成酵素におけるリン酸脱離以降の反応機構についての理論的解明2012
Author(s)
庄司 光男, 花岡 恭平, 近藤 大生, 田口 真彦, 栢沼 愛, 梅田 宏明, 鴨志田 良和, 神谷 克政, 白石 賢二, 村川 武志, 林 秀行,
Organizer
第85回日本生化学会大会
Place of Presentation
福岡国際会議場
Related Report
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[Presentation] QM/MM 法による同化型亜硝酸還元酵素の反応機構についての理論的研究2012
Author(s)
Mitsuo Shoji, Kyohei Hanaoka, Daiki Kondo, Hiroaki Umeda, Megumi Kayanuma, Katsumasa Kamiya, Kenji Shiraishi, Shogo Nakano, Katsuo Katayanagi
Organizer
第50回日本生物物理学会年会
Place of Presentation
名古屋大学
Related Report
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