1DY8 image
Entry Detail
PDB ID:
1DY8
Title:
Inhibition of the Hepatitis C Virus NS3/4A Protease. The Crystal Structures of Two Protease-Inhibitor Complexes (inhibitor II)
Biological Source:
Host Organism:
PDB Version:
Deposition Date:
2000-01-31
Release Date:
2001-01-28
Method Details:
Experimental Method:
Resolution:
2.40 Å
R-Value Free:
0.31
R-Value Work:
0.22
R-Value Observed:
0.21
Space Group:
P 61
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:PROTEASE/HELICASE NS3 (P70)
Chain IDs:A, B
Chain Length:187
Number of Molecules:2
Biological Source:HEPATITIS C VIRUS (ISOLATE TAIWAN)
Polymer Type:polypeptide(L)
Description:NONSTRUCTURAL PROTEIN NS4A (P4)
Mutations:YES
Chain IDs:C, D
Chain Length:16
Number of Molecules:2
Biological Source:HEPATITIS C VIRUS (ISOLATE TAIWAN)
Ligand Molecules
Peptide-like Molecules
PRD_000271
Primary Citation
Inhibition of the Hepatitis C Virus Ns3/4A Protease the Crystal Structures of Two Protease-Inhibitor Complexes
J.Biol.Chem. 275 7152 ? (2000)
PMID: 10702283 DOI: 10.1074/JBC.275.10.7152

Abstact

The hepatitis C virus NS3 protein contains a serine protease domain with a chymotrypsin-like fold, which is a target for development of therapeutics. We report the crystal structures of this domain complexed with NS4A cofactor and with two potent, reversible covalent inhibitors spanning the P1-P4 residues. Both inhibitors bind in an extended backbone conformation, forming an anti-parallel beta-sheet with one enzyme beta-strand. The P1 residue contributes most to the binding energy, whereas P2-P4 side chains are partially solvent exposed. The structures do not show notable rearrangements of the active site upon inhibitor binding. These results are significant for the development of antivirals.

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