Homologs of Rru_A0805 from Rhodospirillum rubrum S1H
conjugal transfer protein (NCBI)
SEED: Conjugative transfer protein TrbE
KEGG: type IV secretion system protein VirB4
27 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser