Multiple Assemblies exist for SMTL entry 4x4u
Crystal structure of the A.fulgidus CCA-adding enzyme in complex with a human MenBeta minihelix ending in CCACC; X-RAY DIFFRACTION 2.70 Å

	SMTL ID 4x4u.1 Ligands RNA (5'-D(*GP*G)-3'); DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER; GLYCEROL Polypeptides CCA-adding enzyme Oligo-state monomer
	SMTL ID 4x4u.2 Ligands DI(HYDROXYETHYL)ETHER Polypeptides CCA-adding enzyme Oligo-state monomer
	SMTL ID 4x4u.3 Ligands GLYCEROL; DI(HYDROXYETHYL)ETHER; DIPHOSPHOMETHYLPHOSPHONIC ACID ADENOSYL ESTER Polypeptides CCA-adding enzyme Oligo-state homo-dimer