2bs2

From Proteopedia

Revision as of 10:36, 30 October 2007

QUINOL:FUMARATE REDUCTASE FROM WOLINELLA SUCCINOGENES

Overview

Membrane protein complexes can support both the generation and utilisation, of a transmembrane electrochemical proton potential ('proton-motive, force'), either by transmembrane electron transfer coupled to protolytic, reactions on opposite sides of the membrane or by transmembrane proton, transfer. Here we provide the first evidence that both of these mechanisms, are combined in the case of a specific respiratory membrane protein, complex, the dihaem-containing quinol:fumarate reductase (QFR) of, Wolinella succinogenes, so as to facilitate transmembrane electron, transfer by transmembrane proton transfer. We also demonstrate the, non-functionality of this novel transmembrane proton transfer pathway, ('E-pathway') in a variant QFR where a key glutamate residue has been, replaced. The ... [(full description)]

About this Structure

2BS2 is a [Protein complex] structure of sequences from [Wolinella succinogenes] with NA, FAD, FMR, FES, F3S, SF4, HEM and LMT as [ligands]. This structure superseeds the now removed PDB entry 1QLA. Active as [Succinate dehydrogenase], with EC number [1.3.99.1]. Structure known Active Site: AC1. Full crystallographic information is available from [OCA].

Reference

Evidence for transmembrane proton transfer in a dihaem-containing membrane protein complex., Madej MG, Nasiri HR, Hilgendorff NS, Schwalbe H, Lancaster CR, EMBO J. 2006 Oct 18;25(20):4963-70. Epub 2006 Oct 5. PMID:17024183

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