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Biochim Biophys Acta. 2012 Apr;1818(4):1067-84. doi: 10.1016/j.bbamem.2011.08.020. Epub 2011 Aug 22.

The Bam machine: a molecular cooper.

Author information

1
Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA.

Abstract

The bacterial outer membrane (OM) is an exceptional biological structure with a unique composition that contributes significantly to the resiliency of Gram-negative bacteria. Since all OM components are synthesized in the cytosol, the cell must efficiently transport OM-specific lipids and proteins across the cell envelope and stably integrate them into a growing membrane. In this review, we discuss the challenges associated with these processes and detail the elegant solutions that cells have evolved to address the topological problem of OM biogenesis. Special attention will be paid to the Bam machine, a highly conserved multiprotein complex that facilitates OM β-barrel folding. This article is part of a Special Issue entitled: Protein Folding in Membranes.

PMID:
21893027
PMCID:
PMC3253334
DOI:
10.1016/j.bbamem.2011.08.020
[Indexed for MEDLINE]
Free PMC Article

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