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「Biophysics and Physicobiology」に Teppei Sugimoto, Kota Katayama, Hideki Kandori による "Role of Thr82 for the unique photochemistry of TAT rhodopsin" を掲載

2021年05月13日 学会誌

日本生物物理学会欧文誌[Biophysics and Physicobiology]に以下の論文が公開されました。

Teppei Sugimoto, Kota Katayama, Hideki Kandori
"Role of Thr82 for the unique photochemistry of TAT rhodopsin"

【Significance】
Marine bacterial TAT rhodopsin possesses the pKa of the retinal Schiff base at neutral pH, and the primary photointermediate reverts to the original state within 10–5 sec. To identify the origin of these properties, here we investigated the T82D mutant. From a pH titration study, it was concluded that T82 is the origin of the neutral pKa of the Schiff base in TAT rhodopsin. The photocycle of T82D TAT rhodopsin was very slow (>10 sec) when D82 is negatively charged. It was thus concluded that T82 is one of the determinants of the unique photochemistry of TAT rhodopsin.

Biophysics Physicobiology, 2021, Volume 18, Pages 108-115



URL:https://doi.org/10.2142/biophysico.bppb-v18.012


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