RPSBLAST alignment for GI: 254780799 and conserved domain: pfam10412

>gnl|CDD|150993 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. Length = 386
 Score = 40.6 bits (96), Expect = 0.001
 Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 5/54 (9%)

Query: 442 IEGKPIIADLARMPHLLIAGTTGSGKSVAINTMILSLLYRMTPAQCRLIMIDPK 495
           I G P+        H+LI GTTG+GK+ A+  ++  +  R      R I+ DP 
Sbjct: 4   IAGVPLPRRSETQ-HILIVGTTGTGKTQALRELLDQIRAR----GDRAIIYDPT 52