Status	Description	Organism	Genes	References
	phosphoribosylformimino-5-aminoimidazole carboxamide ribotide isomerase	Brucella ceti	hisA
	1-(5-phosphoribosyl)-5-[(5- phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase	Brucella melitensis	hisA