Homologs of Rru_A1166 from Rhodospirillum rubrum S1H
hydrogenase expression/formation protein hupH (NCBI)
SEED: Hydrogenase maturation factor HoxQ
KEGG: hydrogenase-1 operon protein HyaF
21 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser