Top cofit genes for GFF5513 from Variovorax sp. SCN45
N5-carboxyaminoimidazole ribonucleotide synthase (EC 6.3.4.18)
SEED: Phosphoribosylaminoimidazole carboxylase ATPase subunit (EC 4.1.1.21)
KEGG: 5-(carboxyamino)imidazole ribonucleotide synthase 
Or look for negative cofitness