Ontology highlight
ABSTRACT:
SUBMITTER: Hasan SS
PROVIDER: S-EPMC4034689 | biostudies-literature | 2013 Apr
REPOSITORIES: biostudies-literature
Hasan S Saif SS Stofleth Jason T JT Yamashita Eiki E Cramer William A WA
Biochemistry 20130405 15
Cytochrome b6f catalyzes quinone redox reactions within photosynthetic membranes to generate a transmembrane proton electrochemical gradient for ATP synthesis. A key step involves the transfer of an electron from the [2Fe-2S] cluster of the iron-sulfur protein (ISP) extrinsic domain to the cytochrome f heme across a distance of 26 Å, which is too large for competent electron transfer but could be bridged by translation-rotation of the ISP. Here we report the first crystallographic evidence of si ...[more]