Multiple Assemblies exist for SMTL entry 1y9z
Crystal Structure of Psychrophilic Subtilisin-like Serine Protease from Antarctic Psychrotroph Pseudoalteromonas sp. AS-11 at 0.14 nm resolution; X-RAY DIFFRACTION 1.40 Å

	SMTL ID 1y9z.1 Ligands CALCIUM ION; SODIUM ION; SULFATE ION; phenylmethanesulfonic acid; 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL Polypeptides alkaline serine protease Oligo-state monomer
	SMTL ID 1y9z.2 Ligands CALCIUM ION; SODIUM ION; SULFATE ION; phenylmethanesulfonic acid Polypeptides alkaline serine protease Oligo-state monomer