>pfam10412 TrwB_AAD_bind Type IV secretion-system coupling protein DNA-binding domain. The plasmid conjugative coupling protein TrwB forms hexamers from six structurally very similar protomers. This hexamer contains a central channel running from the cytosolic pole (made up by the AADs) to the membrane pole ending at the transmembrane pore shaped by 12 transmembrane helices, rendering an overall mushroom-like structure. The TrwB_AAD (all-alpha domain) domain appears to be the DNA-binding domain of the structure. TrwB, a basic integral inner-membrane nucleoside-triphosphate-binding protein, is the structural prototype for the type IV secretion system coupling proteins, a family of proteins essential for macromolecular transport between cells and export.

Probab=97.76 E-value=3.7e-05 Score=58.22 Aligned_cols=61 Identities=21% Similarity=0.297 Sum_probs=36.5 Q ss_pred EEEEHHHHHHHHHHCCCHHHHHHHHHHHHHHHCCEEEEEEECCCCC-CCCCH-----HHHHCCCCEEEEEECC Q ss_conf 8776344688887321005889999998664142379999657775-35543-----5541102515876458 Q gi|254780799|r 592 IVVVIDEMADLMMVARKDIESAVQRLAQMARASGIHVIMATQRPSV-DVITG-----TIKANFPTRISFQVSS 658 (806) Q Consensus 592 ivviiDElaDlmm~~~~~ve~~i~rlaq~ara~GiHli~aTqrPsv-dvitg-----~ikan~p~riaf~v~s 658 (806) T Consensus 245 v~~~lDEf~~lg--~i~~l~~~l~----~~Rs~gi~~~l~~Qs~~QL~~~YG~~~a~~il~n~~~~i~~~~~d 311 (386) T pfam10412 245 LWFFLDELPSLH--KLPSLADALA----EGRKFGGCVVLGIQSFAQLEEVYGEDGAQTLLGLCNTKLILRVSD 311 (386) T ss_pred EEEEEECHHHCC--CCHHHHHHHH----HHHCCCCEEEEEEECHHHHHHHHCHHHHHHHHHHCCCEEEEECCC T ss_conf 499998711027--6688999999----864078499999838999999879889999996256599982799

HHsearch alignment for GI: 254780799 and conserved domain: pfam10412