Top cofit genes for b3223 from Escherichia coli BW25113
nanE: predicted N-acetylmannosamine-6-P epimerase (NCBI)
SEED: N-acetylmannosamine-6-phosphate 2-epimerase (EC 5.1.3.9)
KEGG: N-acylglucosamine-6-phosphate 2-epimerase
Or look for negative cofitness