Article
The photocycle and proton translocation pathway in a cyanobacterial ion-pumping rhodopsin.
Biophysical journal - 18 Feb 2009
Miranda Mylene R M, Choi Ah Rheum, Shi Lichi, Bezerra Arandi G, Jung Kwang-Hwan, Brown Leonid S
Abstract excerpt
The genome of thylakoidless cyanobacterium Gloeobacter violaceus encodes a fast-cycling rhodopsin capable of light-driven proton transport. We characterize the dark state, the photocycle, and the proton translocation pathway of GR spectroscopically. The dark state of GR contains predominantly all-trans-retinal and, similar to proteorhodopsin, does not show the light/dark adaptation. We found an unusually strong...
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