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J Biol Chem. 2008 Oct 3;283(40):26921-7. doi: 10.1074/jbc.M804490200. Epub 2008 Jul 17.

YidC is involved in the biogenesis of anaerobic respiratory complexes in the inner membrane of Escherichia coli.

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  • 1Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Kerklaan 30, NL-9751 NN Haren, The Netherlands.

Abstract

YidC of Escherichia coli belongs to the evolutionarily conserved Oxa1/Alb3/YidC family. Members of this family have all been implicated in membrane protein biogenesis of aerobic respiratory and energy-transducing proteins. YidC is essential for the insertion of subunit c of the F(1)F(0)-ATP synthase and subunit a of cytochrome o oxidase. The aim of this study was to investigate whether YidC plays a role during anaerobic growth of Escherichia coli, specifically when either nitrate or fumarate are used as terminal electron acceptors or under fermentative conditions. The effect of YidC depletion on the growth, enzyme activities, and protein levels in the inner membrane was determined. YidC is essential for all anaerobic growth conditions tested, and this is not because of the decreased levels of F(1)F(0)-ATP synthase in the inner membrane only. The results suggest a role for YidC in the membrane biogenesis of integral membrane parts of the anaerobic respiratory chain.

PMID:
18635537
[PubMed - indexed for MEDLINE]
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