Article
Exploring the function of Tyr83 in bacteriorhodopsin: features of the Y83F and Y83N mutants.
Biochemistry - 6 Nov 2001
Imasheva E S, Lu M, Balashov S P, Ebrey T G, Chen Y, Ablonczy Z, Menick D R, Crouch R K
Abstract excerpt
Tyrosine-83, a residue which is conserved in all halobacterial retinal proteins, is located at the extracellular side in helix C of bacteriorhodopsin. Structural studies indicate that its hydroxyl group is hydrogen bonded to Trp189 and possibly to Glu194, a residue which is part of the proton release complex (PRC) in bacteriorhodopsin. To elucidate the role of Tyr83 in proton transport, we studied the Y83F and...
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