2017年03月31日 掲載 (Published 03/31/2017)
日本生物物理学会欧文誌［Biophysics and Physicobiology］に以下の論文が新規掲載されました。
Jun Tamogami, Takashi Kikukawa, Toshifumi Nara, Makoto Demura, Tomomi Kimura-Someya, Mikako Shirouzu, Shigeyuki Yokoyama, Seiji Miyauchi, Kazumi Shimono and Naoki Kamo “Existence of two O-like intermediates in the photocycle of Acetabularia rhodopsin II, a light-driven proton pump from a marine alga”
Detection of two O-intermediates in the photocycle of Acetabulariarhodopsin II, a light-driven proton pump
The latter half of the photocycle of microbial rhodopsins remains incompletely understood. Although the transition from N to O intermediate is accompanied by thermal reisomerization of retinal chromophore and accessibility switch of the protonated Schiff base, it has been an unsolved problem which event occurs first, even in bacteriorhodopsin (BR), the most intensively-studied microbial rhodopsin. The present work revealed the formation of two O-states in the latter part of the photocycle of Acetabularia rhodopsin II, a BR-like light-driven proton pump from a marine alga. This finding would help us to understand the latter molecular event in the photocycle of microbial rhodopsins.
Biophysics and Physicobiology, Vol.14, pp. 49-55