Top cofit genes for b0523 from Escherichia coli BW25113
purE: phosphoribosylaminoimidazole carboxylase catalytic subunit (NCBI)
SEED: Phosphoribosylaminoimidazole carboxylase catalytic subunit (EC 4.1.1.21)
KEGG: 5-(carboxyamino)imidazole ribonucleotide mutase
Or look for negative cofitness