The role of the retinylidene Schiff base counterion in rhodopsin in determining wavelength absorbance and Schiff base pKa.

Glu-113 serves as the retinylidene Schiff base counterion in bovine rhodopsin. Purified mutant rhodopsin pigments were prepared in which Glu-113 was replaced individually by Gln (E113Q), Asp (E113D), Asn (E113N), or Ala (E113A). E113Q, E113N, and E113A existed as pH-dependent equilibrium mixtures of...

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Pubblicato in:	Proc Natl Acad Sci U S A
Autori principali:	Sakmar, T P, Franke, R R, Khorana, H G
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	National Academy of Sciences 1991
Soggetti:	Research Article
Accesso online:	https://ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC51388/ https://ncbi.nlm.nih.govhttps://pubmed.ncbi.nlm.nih.gov/2014228/ https://ncbi.nlm.nih.govhttps://doi.org/10.1073/pnas.88.8.3079
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