ISDA

Entry Detail

PDB ID:

1BT7

Keywords:

Title:

THE SOLUTION NMR STRUCTURE OF THE N-TERMINAL PROTEASE DOMAIN OF THE HEPATITIS C VIRUS (HCV) NS3-PROTEIN, FROM BK STRAIN, 20 STRUCTURES

Biological Source:

Source Organism:

Hepatitis C virus

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

1998-09-01

Release Date:

1999-06-22

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

Conformers Submitted:

Selection Criteria:

LEAST RESTRAINT VIOLATIONS/MINIMUM ENERGY

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:NS3 SERINE PROTEASE
Mutations:INS(R180-ASKKKK)
Chain IDs:A
Chain Length:186
Number of Molecules:1
Biological Source:Hepatitis C virus

UniProt ID:P26663 Pfam ID:PF02907 EC:3.4.21.98

Ligand Molecules

Primary Citation

The solution structure of the N-terminal proteinase domain of the hepatitis C virus (HCV) NS3 protein provides new insights into its activation and catalytic mechanism.

Barbato, G, Cicero, D.O, Nardi, M.C, Steinkuhler, C, Cortese, R, De Francesco, R, Bazzo, R, Yan, Y, Li, Y, Munshi, S, Sardana, V, Cole, J.L, Sardana, M, Steinkuehler, C, Tomei, L, De Francesco, R, Kuo, L.C, Chen, Z, Urbani, A, Bazzo, R, Nardi, M.C, Cicero, D.O, De Francesco, R, Steinkuhler, C, Barbato, G, Kim, J.L, Morgenstern, K.A, Lin, C, Fox, T, Dwyer, M.D, Landro, J.A, Chambers, S.P, Markland, W, Lepre, C.A, O'Malley, E.T, Harbeson, S.L, Rice, C.M, Murcko, M.A, Caron, P.R, Thomson, J.A, Kim, J.L, Morgenstern, K.A, Lin, C, Fox, T, Dwyer, M.D, Landro, J.A, Chambers, S.P, Markland, W, Lepre, C.A, O'Malley, E.T, Harbeson, S.L, Rice, C.M, Murcko, M.A, Caron, P.R, Thomson, J.A, Love, R.A, Parge, H.E, Wickersham, J.A, Hostomsky, Z, Habuka, N, Moomaw, E.W, Adachi, T, Hostomska, Z.Show

J.Mol.Biol. 289 371 384 (1999)

PMID: 10366511 DOI: 10.1006/jmbi.1999.2745

Abstact

The solution structure of the hepatitis C virus (BK strain) NS3 protein N-terminal domain (186 residues) has been solved by NMR spectroscopy. The protein is a serine protease with a chymotrypsin-type fold, and is involved in the maturation of the viral polyprotein. Despite the knowledge that its activity is enhanced by the action of a viral protein cofactor, NS4A, the mechanism of activation is not yet clear. The analysis of the folding in solution and the differences from the crystallographic structures allow the formulation of a model in which, in addition to the NS4A cofactor, the substrate plays an important role in the activation of the catalytic mechanism. A unique structural feature is the presence of a zinc-binding site exposed on the surface, subject to a slow conformational exchange process.

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Primary Citation of related structures