解説
電気生理学から見えてくる微生物型ロドプシンのイオン輸送メカニズム
2017 年 57 巻 4 号 p. 179-185
詳細
2017 年 57 巻 4 号 p. 179-185
The microbial rhodopsins are a class of membrane proteins with seven transmembrane helices harboring an all-trans retinal retinal chromophore. The functions of microbial rhodopsins are diverse, including light-driven cation and anion pumps, light-gated cation and anion channels, positive and negative phototaxis sensors, photochromic sensors, and light-activated enzymes. Here I focus on the ion-transporting rhodopsins and explain the mechanism of the pumps and the channels revealed by the electrophysiological studies. Characteristics of light-gated cation channel (channelrhodopsins) and proton-pumping rhodopsins are discussed.
