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Pathway of proton transfer in bacterial reaction centers: replacement of serine-L223 by alanine inhibits electron and proton transfers associated with reduction of quinone to dihydroquinone.

The pathway of proton transfer in the reaction center (RC) from Rhodobacter sphaeroides was investigated by site-directed mutagenesis. Ser-L223, a putative proton donor that forms a hydrogen bond with the secondary quinone acceptor QB, was replaced with Ala and Thr. RCs with Ala-L223 displayed reduc...

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Detalhes bibliográficos
Main Authors: Paddock, M L, McPherson, P H, Feher, G, Okamura, M Y
Formato: Artigo
Idioma:Inglês
Publicado em: 1990
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Acesso em linha:https://ncbi.nlm.nih.gov/pmc/articles/PMC54626/
https://ncbi.nlm.nih.gov/pubmed/2168561
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