Multiple Assemblies exist for SMTL entry 1xbt
Crystal Structure of Human Thymidine Kinase 1; X-RAY DIFFRACTION 2.40 Å

	SMTL ID 1xbt.1 Ligands ZINC ION; MAGNESIUM ION; THYMIDINE-5'-TRIPHOSPHATE Polypeptides Thymidine kinase, cytosolic Oligo-state homo-tetramer
	SMTL ID 1xbt.2 Ligands ZINC ION; MAGNESIUM ION; THYMIDINE-5'-TRIPHOSPHATE Polypeptides Thymidine kinase, cytosolic Oligo-state homo-tetramer