Membrane association of active plasmid partitioning protein A in Escherichia coli.

The Journal of Biological Chemistry
Z Lin, L P Mallavia

Abstract

QsopA and SopA, proteins essential for stable maintenance of low copy number plasmids and encoded on plasmid QpH1 of Coxiella burnetii and the F plasmid of Escherichia coli, respectively, are shown to be membrane associated using three independent approaches: isolation of hybrid protein A-PhoA proteins that display PhoA (bacterial alkaline phosphatase) activity indicating a periplasmic location, biochemical fractionation by flotation gradient centrifugation, and subcellular localization by immunoelectron microscopy. These data provide insight into the mechanism by which partitioning protein A spatially directs plasmids into daughter cells at bacterial division.

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Citations

Aug 28, 2001·Journal of Biotechnology·C Bignell, C M Thomas
Nov 9, 2000·Molecular Microbiology·M LemonnierD Lane
Nov 28, 2000·Annual Review of Genetics·S Hiraga
Jul 9, 1999·Journal of Molecular Biology·P YatesD P Biek
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Jan 12, 2021·The Journal of Membrane Biology·Dipika MishraRamanujam Srinivasan
Aug 21, 2001·Genes & Development·K P Lemon, A D Grossman

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