Homologs of Rru_A0215 from Rhodospirillum rubrum S1H
Protein of unknown function DUF6, transmembrane (NCBI)
SEED: Permease of the drug/metabolite transporter (DMT) superfamily
Top 100 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser