>sp|O66856|PUR8_AQUAE Adenylosuccinate lyase OS=Aquifex aeolicus GN=purB MIERYTRKEMGDVWSEVNKFKKWLDVEIAVCRAWAKLGKIPRDALKKIEEKTYVDKKVVE KIKEKEKVFKHDVLAFVSVIAEQVGEEGRYIHMGLTSSDVVDTALALLIREAIDIILKDI DKVMEEIKRLAFEHKDTLMMGRTHGVHAEPYTFGLKMCVWYDEMRRQKERLLFARENVLY GKISGAVGTYSNIPPEVEKLALEELGLKIEPASTQIVHRDRHAQLLTTLGLIASSLEKFA TEIRHLQRTEVLEVLEPFTKGQRGSSAMPHKKNPIHSERICGLARVIRANSIPAMEDVVL WHERDISHSSVERVILPDSFIALDYILNLFYEILKGLVVNKERMRKNMELSKGLYASSKI LVLLTQKGLSRDYAYDIVQRCAMKAWESDKTFKETLLEDPEVTKYLTEEEIEKALDPWEF LKNRDYVYEKVFGDEMG