Homologs of Rru_A1074 from Rhodospirillum rubrum S1H
MotA/TolQ/ExbB proton channel family protein (NCBI)
SEED: MotA/TolQ/ExbB proton channel family protein, probably associated with flagella
19 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser