Multiple Assemblies exist for SMTL entry 4x4v
Crystal structure of the A.fulgidus CCA-adding enzyme in complex with a human MenBeta minihelix ending in CCACC and AMPcPP; X-RAY DIFFRACTION 2.60 Å

	SMTL ID 4x4v.1 Ligands DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER; MAGNESIUM ION; D(-)-TARTARIC ACID; 2-(N-MORPHOLINO)-ETHANESULFONIC ACID; GUANOSINE-5'-MONOPHOSPHATE Polypeptides CCA-adding enzyme Oligo-state monomer
	SMTL ID 4x4v.2 Ligands DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER; MAGNESIUM ION; D(-)-TARTARIC ACID; GUANOSINE-5'-MONOPHOSPHATE Polypeptides CCA-adding enzyme Oligo-state monomer
	SMTL ID 4x4v.3 Ligands DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER; MAGNESIUM ION; D(-)-TARTARIC ACID; 2-(N-MORPHOLINO)-ETHANESULFONIC ACID; GUANOSINE-5'-MONOPHOSPHATE Polypeptides CCA-adding enzyme Oligo-state homo-dimer