Top cofit genes for EX31_RS09100 from Rahnella sp. WP5
uroporphyrinogen-III C-methyltransferase
SEED: Uroporphyrinogen-III methyltransferase (EC 2.1.1.107)
KEGG: uroporphyrin-III C-methyltransferase / precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase 
Or look for negative cofitness