>sp|P50936|HIS4_CERS4 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Cereibacter sphaeroides GN=hisA MILYPAIDLKDGQCVRLLRGEMEAATVFGDDPAAQAAAFEAAGCEWVHLVDLNGAFAGRP VNAAAVEAILARIAVPAQLGGGIRDMATIALWLEKGLARVILGTVAVENPGLVREAARAF PGRVAVGIDARKGRVATKGWATETDVMATDLARSFEDAGVAAIIYTDIDRDGAMAGPNIE ATDALARAVSIPVIASGGVSSLADLLALRDTGSIAGAISGRALYDGALDLTQALQALRA