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Structure and mechanism of a pentameric formate channel.

Waight AB, Love J, Wang DN
Nat Struct Mol Biol 17 31-7 (2010)
Cited: 58 times
EuropePMC logo PMID: 20010838

Abstract

Formate transport across the inner membrane is a critical step in anaerobic bacterial respiration. Members of the formate/nitrite transport protein family function to shuttle substrate across the cytoplasmic membrane. In bacterial pathogens, the nitrite transport protein is involved in protecting bacteria from peroxynitrite released by host macrophages. We have determined the 2.13-A structure of the formate channel FocA from Vibrio cholerae, which reveals a pentamer in which each monomer possesses its own substrate translocation pore. Unexpectedly, the fold of the FocA monomer resembles that found in water and glycerol channels. The selectivity filter in FocA consists of a cytoplasmic slit and a central constriction ring. A 2.5-A high-formate structure shows two formate ions bound to the cytoplasmic slit via both hydrogen bonding and van der Waals interactions, providing a structural basis for the substrate selectivity of the channel.

Articles - 3klz mentioned but not cited (5)

  1. Structure and mechanism of a pentameric formate channel. Waight AB, Love J, Wang DN. Nat. Struct. Mol. Biol. 17 31-37 (2010)
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Reviews citing this publication (9)

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