Homologs of Rru_A3063 from Rhodospirillum rubrum S1H
Crotonyl-CoA reductase (NCBI)
SEED: Crotonyl-CoA carboxylase/reductase, ethylmalonyl-CoA producing
KEGG: crotonyl-CoA carboxylase/reductase
Top 100 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser