tatAd, Sec-independent protein translocase protein TatAd
Also Known as
TATAD_BACSU, tatAd, yczB
Part of the twin-arginine translocation (Tat) system that transports large folded proteins containing a characteristic twin-arginine motif in their signal peptide across membranes. TatA could form the protein-conducting channel of the Tat system. Required for PhoD secretion. The cytosolic fraction of TatAd binds the precursor of PhoD. Forms a complex with TatCd. Two types of complexes exist: one composed of TatAd and TatCd, and another composed only of TatAd. Soluble TatAd forms homomultimers bigger than 100 kDa. Soluble TatAd associates in homomultimeric micelle-like particles with a size of about 12 or 25 nm in diameter as well as in elongated particles of 12 nm in diameter.