A redirected proton pathway in the bacteriorhodopsin mutant Tyr-57-->Asp. Evidence for proton translocation without Schiff base deprotonation.

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Article

A redirected proton pathway in the bacteriorhodopsin mutant Tyr-57-->Asp. Evidence for proton translocation without Schiff base deprotonation.

The Journal of biological chemistry - 18 Nov 1994

Sonar S, Marti T, Rath P, Fischer W, Coleman M, Nilsson A, Khorana H G, Rothschild K J

Abstract excerpt

Light-driven proton pumping in bacteriorhodopsin involves deprotonation of the retinylidene Schiff base during M formation and reprotonation during N formation as key steps. This study reports on the spectroscopic characterization of the bacteriorhodopsin mutant Tyr-57-->Asp (Y57D). The results r...

Topics

Aspartic Acid
Bacteriorhodopsins
Biological Transport
Cell Membrane
Mutation
Protons
Schiff Bases
Spectroscopy, Fourier Transform Infrared
Spectrum Analysis, Raman
Temperature

Source

Open in PubMed

Identifiers

PMID: 7961844

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 30 Aug 2026. Prepared record publication-7961844-2026-08-30.1. Manifest publication-graph-cohort-2026-08-30.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 30 Aug 2026.

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