Homologs of Rru_A2181 from Rhodospirillum rubrum S1H
NAD(P) transhydrogenase, beta subunit (NCBI)
SEED: NAD(P) transhydrogenase subunit beta (EC 1.6.1.2)
KEGG: NAD(P) transhydrogenase subunit beta
96 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser