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Article

Protonation and free energy changes associated with formation of QBH2 in native and Glu-L212-->Gln mutant reaction centers from Rhodobacter sphaeroides.

Biochemistry - 8 Feb 1994

McPherson P H, Schönfeld M, Paddock M L, Okamura M Y, Feher G

Abstract excerpt

Formation of the quinol QBH2 in Glu-L212-->Gln mutant [EQ(L212)] reaction centers (RCs) from Rhodobacter sphaeroides was investigated by measuring the proton uptake (using dyes), UV absorption changes, and free energy changes associated with the two-electron reduction of QB. The advantage of using the EQ(L212) RCs for these studies is that the individual protonation steps can be kinetically resolved and analyzed;...

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PMID: 8110749
DOI: 10.1021/bi00171a018

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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