Top cofit genes for b2221 from Escherichia coli BW25113
atoD: acetyl-CoA:acetoacetyl-CoA transferase, alpha subunit (NCBI)
SEED: Acetyl-CoA:acetoacetyl-CoA transferase, alpha subunit (EC 2.8.3.8)
KEGG: acetate CoA-transferase alpha subunit
Or look for negative cofitness