Initial assembly steps of the twin-arginine translocation signal peptide receptor complex

Anne-Sophie Blümmel
The twin-arginine translocase (Tat) transports folded proteins across cellular membranes. Its sole energy source is the proton-motive force (PMF). Tat-substrates harbor a conserved twin-arginine consensus motif in their signal peptides. In E. coli, the Tat-translocon consists of the single spanning membrane proteins TatA, TatB and TatE and the hexahelical TatC. Multiple TatB-TatC heterodimers form the initial recognition site for the signal peptide while TatA is needed to promote the actual translocation step. It is thought...
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