Multiple Assemblies exist for SMTL entry 4x4s
Crystal structure of the A.fulgidus CCA-adding enzyme in complex with a G70A arginyl-tRNA minihelix ending in CCACC and CTP; X-RAY DIFFRACTION 3.25 Å

	SMTL ID 4x4s.1 Ligands CYTIDINE-5'-TRIPHOSPHATE; MAGNESIUM ION; GLYCEROL; D(-)-TARTARIC ACID; DI(HYDROXYETHYL)ETHER Polypeptides CCA-adding enzyme Oligo-state monomer
	SMTL ID 4x4s.2 Ligands CYTIDINE-5'-TRIPHOSPHATE; MAGNESIUM ION; GLYCEROL Polypeptides CCA-adding enzyme Oligo-state monomer