HMM Summary Page: TIGR01410

Functiontwin arginine-targeting protein translocase TatB
Gene SymboltatB
Trusted Cutoff56.50
Domain Trusted Cutoff56.50
Noise Cutoff46.70
Domain Noise Cutoff46.70
Isology Typeequivalog
HMM Length80
Mainrole CategoryProtein fate
Subrole CategoryProtein and peptide secretion and trafficking
Gene Ontology TermGO:0008565: protein transporter activity molecular_function
GO:0015031: protein transport biological_process
GO:0015628: protein secretion by the type II secretion system biological_process
AuthorHaft DH
Entry DateJan 3 2002 9:25AM
Last ModifiedFeb 14 2011 3:27PM
CommentThis HMM represents the TatB protein of a Sec-independent system for transporting folded proteins, often with a bound redox cofactor, across the bacterial inner membrane. TatC is the multiple membrane spanning component. TatB, like the related TatA/E proteins, appears to span the membrane one time. The tat system recognizes proteins with an elongated signal sequence containing a conserved R-R in a motif approximated by RRxFLK N-terminal to the transmembrane helix. TIGRFAMs model TIGR01409 describes this twin-Arg signal sequence. A similar system, termed Delta-pH-dependent transport, operates on chloroplast-encoded proteins.
ReferencesDR URL; DR HAMAP; MF_00237; 163 of 168
Genome PropertyGenProp0127: Tat (Sec-independent) protein export (HMM)