| Literature DB >> 22098758 |
Yuya Tomonaga1, Tetsurou Hidaka, Izuru Kawamura, Takudo Nishio, Kazuhiro Ohsawa, Takashi Okitsu, Akimori Wada, Yuki Sudo, Naoki Kamo, Ayyalusamy Ramamoorthy, Akira Naito.
Abstract
A novel, to our knowledge, in situ photoirradiation system for solid-state NMR measurements is improved and demonstrated to successfully identify the M-photointermediate of pharaonis phoborhodopsin (ppR or sensory rhodopsin II), that of the complex with transducer (ppR/pHtrII), and T204A mutant embedded in a model membrane. The (13)C NMR signals from [20-(13)C]retinal-ppR and ppR/pHtrII revealed that multiple M-intermediates with 13-cis, 15-anti retinal configuration coexisted under the continuously photoirradiated condition. NMR signals observed from the photoactivated retinal provide insights into the process of photocycle in the ppR/pHtrII complex.Entities:
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Year: 2011 PMID: 22098758 PMCID: PMC3218342 DOI: 10.1016/j.bpj.2011.10.022
Source DB: PubMed Journal: Biophys J ISSN: 0006-3495 Impact factor: 4.033