>4zfn_B mol:protein length:179 Purine phosphoribosyltransferase (GpT-2)MVEYHIPSWDEIEDAVFSIGEALVKSNYIPDVLIAVLTGGIIPAKLLSDLLDLKVIRYIDIKFYRSVGKTESKPVIRSVYTDSLEGKKVLVVDDVADTGETLEAVSNVITMFNPAKVMTAALYLKPWSKRIPDFYYKQIDKWIIFPWDKWDVVRENSNVPVDKKERFLNLYNQLLKIRK