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The twin-arginine translocation (Tat) protein export pathway

The twin-arginine translocation (Tat) protein export pathway

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Original languageEnglish
Pages483-496
Number of pages14
JournalNature Reviews Microbiology
Journal publication date2012
Journal number7
Volume10
DOIs
StatePublished

Abstract

The twin-arginine translocation (Tat) protein export system is present in the cytoplasmic membranes of most bacteria and archaea and has the highly unusual property of transporting fully folded proteins. The system must therefore provide a transmembrane pathway that is large enough to allow the passage of structured macromolecular substrates of different sizes but that maintains the impermeability of the membrane to ions. In the Gram-negative bacterium Escherichia coli, this complex task can be achieved by using only three small membrane proteins: TatA, TatB and TatC. In this Review, we summarize recent advances in our understanding of how this remarkable machine operates. © 2012 Macmillan Publishers Limited. All rights reserved.

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