>sp|Q5YYP5|HIS4_NOCFA 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Nocardia farcinica GN=hisA MSLVLLPAVDVANGEAVRLVQGEAGSETSYGSPRDAALAWQEAGAEWVHLVDLDAAFGRG SNRELLAKVVGELDVKVELSGGIRDDDSLEAALATGCARVNLGTAALEDPQWCARAIAKH GERIAVGLDVRIIDGDYRLRGRGWVSDGGDLWEVLERLERDGCSRYVVTDVTKDGTLTGP NLELLSEVCAATEAPVIASGGVSAIEDLVAIAGLVPEGVEGAIVGKALYAGRFTLPEALA AVR