Multiple Assemblies exist for SMTL entry 1r64
The 2.2 A crystal structure of Kex2 protease in complex with Ac-Arg-Glu-Lys-boroArg peptidyl boronic acid inhibitor; X-RAY DIFFRACTION 2.20 Å

	SMTL ID 1r64.1 Ligands Ac-Arg-Glu-Lys-boroArg peptide inhibitor; 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose; 2-acetamido-2-deoxy-beta-D-glucopyranose; CALCIUM ION; POTASSIUM ION Polypeptides Kexin Oligo-state monomer
	SMTL ID 1r64.2 Ligands Ac-Arg-Glu-Lys-boroArg peptide inhibitor; 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose; 2-acetamido-2-deoxy-beta-D-glucopyranose; CALCIUM ION; POTASSIUM ION; 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL Polypeptides Kexin Oligo-state monomer