>sp|Q8TU67|PURP_METAC 5-formaminoimidazole-4-carboxamide-1-(beta)-D-ribofuranosyl 5'-monophosphate synthetase OS=Methanosarcina acetivorans GN=purP MITKQQVLEFLKNYDLENITIATVCSHSSLQIFDGARKEGFRTLGICVGKPPKFYEAFPK AKPDEYLIVDSYSDIMNKVEELRKKNVIIIPHGSFVAYLGTENFAELTVPTFGNRAVLEW ESDRDKEREWLLGAGIHMPGKIDDPRDINGPVMVKYDGAKGGKGFFVAKTYEEFDELVDR TQKYTIQEFITGTRYYLHYFYSPIRNEGYTLSEGSLELLSMDRRVESNADEIFRLGSPRE LIEAGIRPTYVVTGNVPLVARESLLPLIFSLGERVVEESLGLFGGMIGAFCLETVFTDSL EIKVFEISARIVAGTNLYISGSPYADLIQEDLSTGRRIAQEIKEAVRTNQLDKIIS