>tr|M9U790|M9U790_SULIS Phosphoribosyl-ATP pyrophosphatase OS=Sulfolobus islandicus LAL14/1 GN=hisE MSNEIVDKLYKVILDRIEKRPTGSYTAEIVNKGKAYVARKVGEESVETIVASLAENKERF ISEVADLIYHLLVLMALEGVTPDDIYRELERRRK