>tr|G0H0X9|G0H0X9_METMI Phosphoribosyl-ATP pyrophosphatase OS=Methanococcus maripaludis X1 GN=hisE MNVLKEVYATIEKRIEEKPEGSYVAKLTTDDKKTAVNKICEKVGEEAAEVIIAAKDNDKA EIIYESADLIFHTMVLLAKSGITYEELSEEFKKRMK