Top cofit genes for Rru_A3405 from Rhodospirillum rubrum S1H
Formaldehyde dehydrogenase (glutathione) (NCBI)
SEED: S-(hydroxymethyl)glutathione dehydrogenase (EC 1.1.1.284)
KEGG: S-(hydroxymethyl)glutathione dehydrogenase / alcohol dehydrogenase
Or look for negative cofitness