Top cofit genes for b2763 from Escherichia coli BW25113
cysI: sulfite reductase, beta subunit, NAD(P)-binding, heme-binding (NCBI)
SEED: Sulfite reductase [NADPH] hemoprotein beta-component (EC 1.8.1.2)
KEGG: sulfite reductase (NADPH) hemoprotein beta-component
Or look for negative cofitness