>sp|Q21U92|HIS4_ALBFT 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Albidiferax ferrireducens GN=hisA MLLIPAIDLKDGHCVRLKQGDMDQSTTFSEEPFVMARNWVDKGARRLHLVDLNGAFAGHP KNELAIRKILKDVGSEVDVQLGGGIRDLDTIERYLDAGLRYVIIGTAAVKNPGFLQDACT AFGGHIIVGLDARDGKIATDGWSKLTRHDVVDLAKKFEDYGVESIIYTDISRDGMLSGIN IEATVRLAQALTIPVIASGGLSGMADIEALCAVENEGIEGVICGRAIYSGDLDFEAAQER ANELNG