ISDA

Entry Detail

PDB ID:

1HNE

Keywords:

Title:

Structure of human neutrophil elastase in complex with a peptide chloromethyl ketone inhibitor at 1.84-angstroms resolution

Biological Source:

Source Organism:

Homo sapiens

PDB Version:

Deposition Date:

1989-04-10

Release Date:

1989-10-15

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.84 Å

R-Value Observed:

0.16

Space Group:

P 63

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:HUMAN LEUCOCYTE ELASTASE
Chain IDs:A (auth: E)
Chain Length:218
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P08246 Pfam ID:PF00089 EC:3.4.21.37

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
ALV	B	ALA	(2S)-2-AMINOPROPANE-1,1-DIOL

Peptide-like Molecules

PRD_000402

Primary Citation

Structure of human neutrophil elastase in complex with a peptide chloromethyl ketone inhibitor at 1.84-A resolution.

Navia, M.A, McKeever, B.M, Springer, J.P, Lin, T.Y, Williams, H.R, Fluder, E.M, Dorn, C.P, Hoogsteen, K, Williams, H.R, Lin, T.-Y, Navia, M.A, Springer, J.P, Mckeever, B.M, Hoogsteen, K, Dornjunior, C.P.Show

Proc.Natl.Acad.Sci.USA 86 7 11 (1989)

PMID: 2911584 DOI: 10.1073/pnas.86.1.7

Abstact

Human neutrophil elastase (HNE) has been implicated as a major contributor to tissue destruction in various disease states, including emphysema. The structure of HNE, at neutral pH, in complex with methoxysuccinyl-Ala-Ala-Pro-Ala chloromethyl ketone (MSACK), has been solved and refined to an R factor of 16.4% at 1.84-A resolution. Results are consistent with the currently accepted mechanism of peptide chloromethyl ketone inhibition of serine proteases, in that MSACK cross-links the catalytic residues His-57 and Ser-195. The structure of the HNE-MSACK complex is compared with that of porcine pancreatic elastase in complex with L-647,957, a beta-lactam inhibitor of both elastases. The distribution of positively charged residues on HNE is highly asymmetric and may play a role in its specific association with the underlying negatively charged proteoglycan matrix of the neutrophil granules in which the enzyme is stored.

Legend

Protein

Chemical

Disease

Primary Citation of related structures