>sp|A3PI63|HIS4_CERS1 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Cereibacter sphaeroides GN=hisA MILYPAIDLKDGQCVRLLRGEMEAATVFGDDPAAQAAAFEAAGCEWVHLVDLNGAFAGRP VNAAAVEAILARIAVPAQLGGGIRDMATIALWLEKGLARVILGTVAVENPGLVREAARAF PGRVAVGIDARKGRVATKGWATETDVMATDLARSFEDAGVAAIIYTDIDRDGAMAGPNIE ATDALARAVSIPVIASGGVSSLADLLALRDTGSIAGAISGRALYDGALDLTQALQALRT