>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=95.35  E-value=0.019  Score=37.74  Aligned_cols=38  Identities=34%  Similarity=0.413  Sum_probs=25.6

Q ss_pred             CCCCCCEEEEECCCCCHHHHHHH-HHHHH--CCCEEEHHHH
Q ss_conf             22568358840733217699999-99871--8531310122
Q gi|254780271|r  110 ELAKSNILLVGPTGCGKTYLAQT-LARII--DVPFTMADAT  147 (424)
Q Consensus       110 ei~~~NILliGPTGvGKTelAr~-LAk~l--~~PF~~vdaT  147 (424)
T Consensus        12 ~~~~~H~lviG~tGsGKT~~i~~~i~~~~~~~~s~iv~DpK   52 (386)
T pfam10412        12 RSETQHILIVGTTGTGKTQALRELLDQIRARGDRAIIYDPT   52 (386)
T ss_pred             CCCCCEEEEECCCCCCHHHHHHHHHHHHHHCCCCEEEEECC
T ss_conf             87767589988999988879999999999779919999587