ISDA

Deposition Date 1995-07-31

Release Date 1996-01-29

Last Version Date 2024-10-30

Entry Detail

PDB ID:

1NES

Keywords:

HYDROLASE/HYDROLASE INHIBITOR

Title:

STRUCTURE OF THE PRODUCT COMPLEX OF ACETYL-ALA-PRO-ALA WITH PORCINE PANCREATIC ELASTASE AT 1.65 ANGSTROMS RESOLUTION

Biological Source:

Source Organism:

Sus scrofa (Taxon ID: 9823)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.65 Å

R-Value Work:

0.18

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:ELASTASE
Gene (Uniprot):CELA1
Chain IDs:A (auth: E)
Chain Length:240
Number of Molecules:1
Biological Source:Sus scrofa

UniProt ID:P00772 Pfam ID:PF00089 EC:3.4.21.36

Ligand Molecules

SO4

Primary Citation

Structure of the product complex of acetyl-Ala-Pro-Ala with porcine pancreatic elastase at 1.65 A resolution.

J.Mol.Biol. 189 533 539 (1986)

PMID: 3640831 DOI: 10.1016/0022-2836(86)90322-0

Abstact

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.

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Primary Citation of related structures