>sp|Q97KH6|HIS2_CLOAB Phosphoribosyl-ATP pyrophosphatase OS=Clostridium acetobutylicum GN=hisE MDKNEILSKLYNVIEDRKNNPIEGSYTNYLFEKGIDKILKKVGEETTEVIIASKDDNKED LINEICDVIYHTLVLLNYKNIKLEDIEKELQKRNEKILNKKQERRPIENI