>sp|Q97KH7|HIS3_CLOAB Phosphoribosyl-AMP cyclohydrolase OS=Clostridium acetobutylicum GN=hisI MEYKKILEMMDFSKGLIPAIVQDDENGEVLMLAYMNEEALKRTVDTKRTWFWSRSRKSYW NKGETSGHFQYVKSIGIDCDGDTILIKVKQVGAACHTGNRSCFYRSFEFEDGGAK