Role of Arg-72 of pharaonis Phoborhodopsin (sensory rhodopsin II) on its photochemistry.

doi:10.1016/S0006-3495(04)74359-3

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Article

Role of Arg-72 of pharaonis Phoborhodopsin (sensory rhodopsin II) on its photochemistry.

Biophysical journal - 1 May 2004

Ikeura Yukako, Shimono Kazumi, Iwamoto Masayuki, Sudo Yuki, Kamo Naoki

Abstract excerpt

Pharaonis phoborhodopsin (ppR, or pharaonis sensory rhodopsin II, NpsRII) is a sensor for the negative phototaxis of Natronomonas (Natronobacterium) pharaonis. Arginine 72 of ppR corresponds to Arg-82 of bacteriorhodopsin, which is a highly conserved residue among microbial rhodopsins. Using various Arg-72 ppR mutants, we obtained the following results: 1). Arg-72(ppR) together possibly with Asp-193 influenced...

Topics

Arginine
Bacteriorhodopsins
Chlorine
Guanidine
Hydrogen-Ion Concentration
Ions
Light
Mutation
Phosphatidylcholines
Photochemistry
Photolysis
Proton Pumps
Protons
Recombinant Proteins
Rhodopsin
Time Factors

Source

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Identifiers

PMID: 15111424
DOI: 10.1016/S0006-3495(04)74359-3
PMCID: PMC1304176

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