Multiple Assemblies exist for SMTL entry 1ch8
STRUCTURE OF ADENYLOSUCCINATE SYNTHETASE FROM E. COLI COMPLEXED WITH A STRINGENT EFFECTOR, PPG2':3'P; X-RAY DIFFRACTION 2.50 Å

	SMTL ID 1ch8.1 Ligands NITRATE ION; MAGNESIUM ION; GUANOSINE 5'-DIPHOSPHATE 2':3'-CYCLIC MONOPHOSPHATE; HADACIDIN; INOSINIC ACID Polypeptides PROTEIN (ADENYLOSUCCINATE SYNTHETASE) Oligo-state monomer
	SMTL ID 1ch8.2 Ligands NITRATE ION; MAGNESIUM ION; GUANOSINE 5'-DIPHOSPHATE 2':3'-CYCLIC MONOPHOSPHATE; HADACIDIN; INOSINIC ACID Polypeptides PROTEIN (ADENYLOSUCCINATE SYNTHETASE) Oligo-state homo-dimer