1nes is a 3 chain structure with sequence from Sus scrofa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
A single crystal of porcine pancreatic elastase was mounted in a thin-walled capillary and allowed to react with acetyl-Ala-Pro-Ala-paranitroanalide. Diffraction data to 1.65 A resolution were measured and the isomorphous structure was solved from the difference Fourier map. The structure contains two surprises. Two molecules of the product: acetyl-Ala-Pro-Ala molecule are bound in the extended binding site. Both molecules are bound backwards with respect to the established mode of peptide binding.
Structure of the product complex of acetyl-Ala-Pro-Ala with porcine pancreatic elastase at 1.65 A resolution.,Meyer EF Jr, Radhakrishnan R, Cole GM, Presta LG J Mol Biol. 1986 Jun 5;189(3):533-9. PMID:3640831[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑ Meyer EF Jr, Radhakrishnan R, Cole GM, Presta LG. Structure of the product complex of acetyl-Ala-Pro-Ala with porcine pancreatic elastase at 1.65 A resolution. J Mol Biol. 1986 Jun 5;189(3):533-9. PMID:3640831
