Structural biology of membrane transporters involved in the efflux mechanism of organic molecules
Project/Area Number |
17H03640
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Structural biochemistry
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Research Institution | The University of Tokyo |
Principal Investigator |
Ishitani Ryuichiro 東京大学, 大学院理学系研究科(理学部), 特任教授 (90361568)
|
Project Period (FY) |
2017-04-01 – 2020-03-31
|
Project Status |
Completed (Fiscal Year 2019)
|
Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2019: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2018: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2017: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
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Keywords | X線結晶構造解析 / 膜タンパク質 / 多剤耐性菌 / 薬物動態 / 結晶構造解析 / 膜蛋白質 / 輸送体 / 多剤耐性因子 |
Outline of Final Research Achievements |
Living organisms are constantly exposed to toxic organic molecules, and cells have a mechanism to excrete them as a defensive measure. The molecular entity of this efflux mechanism is the membrane protein, the "efflux transporter". In this study, we analyzed the structure of MATE, a multidrug efflux transporter, focusing on the efflux mechanism of organic molecules. For eukaryotic MATE, we determined the structure of the outward opening state of the MATE transporter AtDTX14, from Arabidopsis, and verified the transport mechanism by structure-based mutational analysis. We also analyzed the structure of VcmN, a MATE from a pathogenic bacterium. The results of this structural analysis suggested that VcmN extrudes the substrate by H+-motive force-dependent TM1 bending.
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Academic Significance and Societal Importance of the Research Achievements |
生体は常に有毒な有機分子にさらされているが、細胞は防御策としてこれらを排出する機構を有している。これらの排出にかかわるMATE輸送体は細胞内外の物質の分布を制御する役割を担うため、その輸送機構を解明することは生命現象を理解するうえで必須であり、さらに医薬への応用などにおいても重要である。
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Report
(4 results)
Research Products
(26 results)
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[Journal Article] Crystal structure of Drosophila Piwi.2020
Author(s)
Yamaguchi, S., Oe, A., Nishida, KM., Yamashita, K., Kajiya, A., Hirano, S., Matsumoto, N., Dohmae, N., Ishitani, R., Saito, K., Siomi, H., Nishimasu, H., Siomi, MC., and Nureki, O.
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Journal Title
Nature Communications
Volume: 11
Issue: 1
Pages: 858-858
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Engineered CRISPR-Cas9 nuclease with expanded targeting space2018
Author(s)
Nishimasu Hiroshi、Shi Xi、Ishiguro Soh、Gao Linyi、Hirano Seiichi、Okazaki Sae、Noda Taichi、Abudayyeh Omar O.、Gootenberg Jonathan S.、Mori Hideto、Oura Seiya、Holmes Benjamin、Tanaka Mamoru、Seki Motoaki、Hirano Hisato、Aburatani Hiroyuki、Ishitani Ryuichiro、Ikawa Masahito、Yachie Nozomu、Zhang Feng、Nureki Osamu
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Journal Title
Science
Volume: 361
Issue: 6408
Pages: 1259-1262
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Cryo-EM structures of the human volume-regulated anion channel LRRC82018
Author(s)
Kasuya G, Nakane T, Yokoyama T, Jia Y, Inoue M, Watanabe K, Nakamura R, Nishizawa T, Kusakizako T, Tsutsumi A, Yanagisawa H, Dohmae N, Hattori M, Ichijo H, Yan Z, Kikkawa M, Shirouzu M, Ishitani R, Nureki O
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Journal Title
Nat Struct Mol Biol.
Volume: 25
Issue: 9
Pages: 797-804
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Structural basis for xenobiotics extrusion by eukaryotic MATE transporter.2017
Author(s)
Miyauchi H., Moriyama S., Kusakizako T., Kumazaki K., Ito K., Dohmae N., Nishizawa T., Miyaji T., Moriyama Y., Ishitani R., Nureki O.
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Journal Title
Nature Commun.
Volume: 8
Issue: 1
Pages: 1633-1633
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Structural insights into the competitive inhibition of the ATP-gated P2X receptor channel2017
Author(s)
Kasuya G, Yamaura T, Ma XB, Nakamura R, Takemoto M, Nagumo H, Tanaka E, Dohmae N, Nakane T, Yu Y, Ishitani R, Matsuzaki O, Hattori M, Nureki O
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Journal Title
Nat Commun.
Volume: 8
Issue: 1
Pages: 876-876
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] ATP-dependent modulation of MgtE in Mg2+ homeostasis2017
Author(s)
Tomita Atsuhiro、Zhang Mingfeng、Jin Fei、Zhuang Wenhui、Takeda Hironori、Maruyama Tatsuro、Osawa Masanori、Hashimoto Ken-ichi、Kawasaki Hisashi、Ito Koichi、Dohmae Naoshi、Ishitani Ryuichiro、Shimada Ichio、Yan Zhiqiang、Hattori Motoyuki、Nureki Osamu
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Journal Title
Nature Communications
Volume: 8
Issue: 1
Pages: 148-148
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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