# OC Root 2nd 3rd 4th PC Gene/Definition OC.229316 Bacteria.306110 Bacteroidetes.82 Tenacibaculum.7700 tmar.1311 tmar:MARIT_1520 hisA; 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase; K01814 phosphoribosylformimino-5-aminoimidazole carboxamide ribotide isomerase [EC:5.3.1.16]