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Pressure induced isomerization of retinal on bacteriorhodopsin as disclosed by Fast Magic Angle Spinning NMR

https://hiroshima.repo.nii.ac.jp/records/2008002
https://hiroshima.repo.nii.ac.jp/records/2008002
58001904-9fee-4ca6-abed-08d12a12093a
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PhotochemPhotobiol_83-2_346.pdf PhotochemPhotobiol_83-2_346.pdf (151.5 KB)
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2023-03-18
タイトル
タイトル Pressure induced isomerization of retinal on bacteriorhodopsin as disclosed by Fast Magic Angle Spinning NMR
言語 en
作成者 Kawamura, Izuru

× Kawamura, Izuru

en Kawamura, Izuru

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Degawa, Yoshiaki

× Degawa, Yoshiaki

en Degawa, Yoshiaki

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Yamaguchi, Satoru

× Yamaguchi, Satoru

en Yamaguchi, Satoru

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Nishimura, Katsuyuki

× Nishimura, Katsuyuki

en Nishimura, Katsuyuki

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Tuzi, Satoru

× Tuzi, Satoru

en Tuzi, Satoru

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Saito, Hazime

× Saito, Hazime

en Saito, Hazime

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Naito, Akira

× Naito, Akira

en Naito, Akira

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 Author Posting. (c) The Authors (2007) This is the author's version of the work. It is posted here for personal use, not for redistribution. The definitive version was published in PHOTOCHEMISTRY AND PHOTOBIOLOGY, 83(2): 346-350. http://dx.doi.org/10.1562/2006-06-20-RC-941
主題
主題Scheme NDC
主題 460
内容記述
内容記述 Bacteriorhodopsin (bR), a retinal protein in purple membrane of H.salinarum, shows functions as a light-driven proton pump. We have detected pressure induced isomerization of retinal in bR by 15N cross polarization-magic angle spinning (CP-MAS) NMR spectra of [ε-15N]Lys-labeled bR. In the 15N NMR spectra, both all-trans and 13-cis retinal configurations have been observed at 148.0 and 155.0 ppm, respectively, at the MAS frequency of 4 kHz in the dark. When the MAS frequency was increased up to 12 kHz corresponding to the sample pressure of 80 atm, the 15N NMR signals of Schiff Base of retinal were broadened. The signal intensity of 13-cis retinal at 155.0 ppm was increased when the MAS frequency was decreased from 12 kHz to 4 kHz. These results showed that the equilibrium constant of [13-cis –bR] /[all-trans-bR] increased by the pressure of 80 atm. It was also revealed that the changes induced by the pressure were quite local. Therefore, microscopically, hydrogen-bond network around retinal would be disrupted or distorted by a constantly applied pressure. It is, therefore, clearly demonstrated that increased pressure induced by fast MAS frequencies generated 13-cis isomerization of retinal in the membrane protein bR.
言語 en
出版者
出版者 American Society of Photobiology
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ AO
出版タイプResource http://purl.org/coar/version/c_b1a7d7d4d402bcce
関連情報
識別子タイプ DOI
関連識別子 10.1562/2006-06-20-RC-941
関連情報
識別子タイプ DOI
関連識別子 http://dx.doi.org/10.1562/2006-06-20-RC-941
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0031-8655
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA00773103
開始ページ
開始ページ 346
書誌情報 Photochemistry and Photobiology
Photochemistry and Photobiology

巻 83, 号 2, p. 346-350, 発行日 2007-03
旧ID 20663
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