Multiple Assemblies exist for SMTL entry 1y8r
SUMO E1 ACTIVATING ENZYME SAE1-SAE2-SUMO1-MG-ATP COMPLEX; X-RAY DIFFRACTION 2.75 Å

	SMTL ID 1y8r.1 Ligands MAGNESIUM ION; ZINC ION; ADENOSINE-5'-TRIPHOSPHATE Polypeptides Ubiquitin-like 1 activating enzyme E1A; Ubiquitin-like 2 activating enzyme E1B; Ubiquitin-like protein SMT3C Oligo-state hetero-1-1-1-mer
	SMTL ID 1y8r.2 Ligands MAGNESIUM ION; ZINC ION; ADENOSINE-5'-TRIPHOSPHATE Polypeptides Ubiquitin-like 1 activating enzyme E1A; Ubiquitin-like 2 activating enzyme E1B; Ubiquitin-like protein SMT3C Oligo-state hetero-1-1-1-mer