>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=96.48  E-value=0.0049  Score=46.63  Aligned_cols=40  Identities=20%  Similarity=0.470  Sum_probs=34.0

Q ss_pred             HCCCCEEEECCCCCCCHHHHHHHHHHHHHCCCEEEEEECC
Q ss_conf             1489559942878770389999999999679828996010
Q gi|254780229|r  417 INGKNLIIEGPPGTGKSQTITNIIAAAMLHGKKILFCAQK  456 (1775)
Q Consensus       417 ~~g~~~vi~GPPGTGKSQTIaNlIa~~la~Gk~VLfVaeK  456 (1775)
T Consensus        13 ~~~~H~lviG~tGsGKT~~i~~~i~~~~~~~~s~iv~DpK   52 (386)
T pfam10412        13 SETQHILIVGTTGTGKTQALRELLDQIRARGDRAIIYDPT   52 (386)
T ss_pred             CCCCEEEEECCCCCCHHHHHHHHHHHHHHCCCCEEEEECC
T ss_conf             7767589988999988879999999999779919999587