>sp|O27322|ASSY_METTH Argininosuccinate synthase OS=Methanothermobacter thermautotrophicus GN=argG MKVIAVDKVVLAFSGGLDTSVCIKLLEEKYNMEVITACVDVGQPRDEIERPAMVAKELGN YRHYTVDARREFAEDYIFPAIKANAVYEGYPLSTALARPLIAKKIVEVAEKEGASAIAHG CTGKGNDQFRFEAVIRSTTDLDVIAPIRDLNLTRTEEMEYARSCGIPLPSDKLYSIDENL WGRAIEGDILEDPMVEPPEDAFEWTKPIHETPEDPEVIEIGFHGGVPVALNGEELEPVEL IGLANEVAGKHGIGRVDIMEDRIIGMKSREIYETPAAFLLLEAHRGLEQLTLTRSELRFA DIISSTYAELVYSGLWHDPLREDLDMAVNHMQRRVTGTVRVKLHRGSMRVIGRESPYSLY SEEIVSFEDKTLDQREMAGMVKNYALQAAIYSRVCRKEN