ISDA

Deposition Date 1999-10-15

Release Date 2000-03-31

Last Version Date 2024-11-13

Entry Detail

PDB ID:

1QNJ

Keywords:

HYDROLASE (SERINE PROTEASE)

Title:

THE STRUCTURE OF NATIVE PORCINE PANCREATIC ELASTASE AT ATOMIC RESOLUTION (1.1 A)

Biological Source:

Source Organism:

SUS SCROFA (Taxon ID: 9823)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.10 Å

R-Value Free:

0.16

R-Value Observed:

0.12

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
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

Atomic Resolution Structure of Native Porcine Pancreatic Elastase at 1.1 A

Wurtele, M, Hahn, M, Hilpert, K, Hohne, W, Wilmouth, R.C, Westwood, N.J, Anderson, K, Brownlee, W, Claridge, T.D.W, Clifton, I.J, Pritchard, G.J, Aplin, R.T, Schofield, C.J, Meyer, E, Cole, G, Radhakrishnan, R, Epp, O, Sawyer, L, Shotton, D.M, Campbell, J.W, Wendell, P.L, Muirhead, H, Watson, H.C, Diamond, R, Ladner, R.C, Watson, H.C, Shotton, D.M, Cox, J.M, Muirhead, H.Show

Acta Crystallogr.,Sect.D 56 520 ? (2000)

PMID: 10739939 DOI: 10.1107/S0907444900000299

Abstact

A data set from the serine protease porcine pancreatic elastase was collected at atomic resolution (1.1 A) with synchrotron radiation. The improved resolution allows the determination of atom positions with high accuracy, as well as the localization of H atoms. Three residues could be modelled in alternative positions. The catalytic triad of elastase consists of His57, Asp102 and Ser195. The His57 N(delta1) H atom was located at a distance of 0.82 A from the N(delta1) atom. The distance between His57 N(delta1) and Asp102 O(delta2) is 2.70 +/- 0.04 A, thus indicating normal hydrogen-bonding geometry. Additional H atoms at His57 N(varepsilon2) and Ser195 O(gamma) could not be identified in the F(o) - F(c) density maps.

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Disease

Primary Citation of related structures