>tr|A0A3G6WKX8|A0A3G6WKX8_CERSP 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Cereibacter sphaeroides GN=hisA MILYPAIDLKDGQCVRLLRGEMEAATVFGDDPAAQAAAFEAAGCEWVHLVDLNGAFAGRP VNAAAVEAILARIAVPAQLGGGIRDMATIALWLEKGLARVILGTVAVENPGLVREAARAF PGRVAVGIDARKGRVATKGWATETDVMATDLARSFEDAGVAAIIYTDIDRDGAMAGPNIE ATDALARAVSIPVIASGGVSSLADLLALRDTGSIAGAISGRALYDGALDLTQALQALRT