purA Adenylosuccinate synthetase MPGIVLIGAQWGDEGKGKATDLIGTKVDYVARFNGGNNAGHSVVVGDESYALHLLPSGIINPNLTPVIGNGVVVDPEVLFEEIDGLESRGIDCSHLKVSEAAHIIAPYHRTLDKVTERFLGKHKIGTTGRGIGPAYADKINRVGIRVHDLFNADHLHDKVEASLHQKNQMLVKLYNRRPIDVDQTTEELLKLGERLKPYVANTGLILNKALDEGKTVLFEGAQATMLDVDHGTYPFVTSSNPTAGGACTGTGVGPTRITRVVGVSKAYVTRVGEGPFPTELLDESGEWLRQQGHEFGVTTGRPRRCGWFDAVVNRYASQVNGLTDIVLTKLDVLAGLKEIPICVAYDVDGERHDDMPTDQAAFAAAKPIYETMPGWDEDISNCHSFDELPATCQAYVKRLEELSGCRISAIGTGPQRDHVIQINSLVD IMP--aspartate ligase BL0549 Plays an important role in the de novo pathway of purine nucleotide biosynthesis. Catalyzes the first commited step in the biosynthesis of AMP from IMP (By similarity). 428 PURA_BIFLO