2OC0

Structure of NS3 complexed with a ketoamide inhibitor SCh491762


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Discovery of the HCV NS3/4A protease inhibitor (1R,5S)-N-[3-amino-1-(cyclobutylmethyl)-2,3-dioxopropyl]-3- [2(S)-[[[(1,1-dimethylethyl)amino]carbonyl]amino]-3,3-dimethyl-1-oxobutyl]- 6,6-dimethyl-3-azabicyclo[3.1.0]hexan-2(S)-carboxamide (Sch 503034) II. Key steps in structure-based optimization.

Prongay, A.J.Guo, Z.Yao, N.Pichardo, J.Fischmann, T.Strickland, C.Myers Jr., J.Weber, P.C.Beyer, B.M.Ingram, R.Hong, Z.Prosise, W.W.Ramanathan, L.Taremi, S.S.Yarosh-Tomaine, T.Zhang, R.Senior, M.Yang, R.S.Malcolm, B.Arasappan, A.Bennett, F.Bogen, S.L.Chen, K.Jao, E.Liu, Y.T.Lovey, R.G.Saksena, A.K.Venkatraman, S.Girijavallabhan, V.Njoroge, F.G.Madison, V.

(2007) J Med Chem 50: 2310-2318

  • DOI: 10.1021/jm060173k
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The structures of both the native holo-HCV NS3/4A protease domain and the protease domain with a serine 139 to alanine (S139A) mutation were solved to high resolution. Subsequently, structures were determined for a series of ketoamide inhibitors in c ...

    The structures of both the native holo-HCV NS3/4A protease domain and the protease domain with a serine 139 to alanine (S139A) mutation were solved to high resolution. Subsequently, structures were determined for a series of ketoamide inhibitors in complex with the protease. The changes in the inhibitor potency were correlated with changes in the buried surface area upon binding the inhibitor to the active site. The largest contribution to the binding energy arises from the hydrophobic interactions of the P1 and P2 groups as they bind to the S1 and S2 pockets [the numbering of the subsites is as defined in Berger, A.; Schechter, I. Philos. Trans. R. Soc. London, Ser. B 1970, 257, 249-264]. This correlation of the changes in potency with increased buried surface area contributed directly to the design of a potent tripeptide inhibitor of the HCV NS3/4A protease that is currently in clinical trials.


    Related Citations: 
    • Crystal structure of the hepatitis C virus NS3 protease domain complexed with a synthetic NS4A cofactor peptide.
      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.
      (1996) Cell 87: 343
    • Hepatitis C virus NS3-4A serine protease inhibitors: SAR of P'2 moiety with improved potency.
      Arasappan, A., Njoroge, F.G., Chan, T.Y., Bennett, F., Bogen, S.L., Chen, K., Gu, H., Hong, L., Jao, E., Liu, Y.T., Lovey, R.G., Parekh, T., Pike, R.E., Pinto, P., Santhanam, B., Venkatraman, S., Vaccaro, H., Wang, H., Yang, X., Zhu, Z., Mckittrick, B., Saksena, A.K., Girijavallabhan, V., Pichardo, J., Butkiewicz, N., Ingram, R., Malcolm, B., Prongay, A., Yao, N., Marten, B., Madison, V., Kemp, S., Levy, O., Lim-Wilby, M., Tamura, S., Ganguly, A.K.
      (2005) Bioorg Med Chem Lett 15: 4180
    • Synthesis and biological activity of macrocyclic inhibitors of hepatitis C virus (HCV) NS3 protease.
      Chen, K.X., Njoroge, F.G., Prongay, A., Pichardo, J., Madison, V., Girijavallabhan, V.
      (2005) Bioorg Med Chem Lett 15: 4475
    • Hepatitis C virus NS3-4A serine protease inhibitors: use of a P2-P1 cyclopropyl alanine combination for improved potency.
      Bogen, S., Saksena, A.K., Arasappan, A., Gu, H., Njoroge, F.G., Girijavallabhan, V., Pichardo, J., Butkiewicz, N., Prongay, A., Madison, V.
      (2005) Bioorg Med Chem Lett 15: 4515
    • Mutations conferring resistance to SCH6, a novel hepatitis C virus NS3/4A protease inhibitor. Reduced RNA replication fitness and partial rescue by second-site mutations.
      Yi, M., Tong, X., Skelton, A., Chase, R., Chen, T., Prongay, A., Bogen, S.L., Saksena, A.K., Njoroge, F.G., Veselenak, R.L., Pyles, R.B., Bourne, N., Malcolm, B.A., Lemon, S.M.
      (2006) J Biol Chem 281: 8205

    Organizational Affiliation

    Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, USA. andrew.prongay@spcorp.com



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hepatitis C Virus
A, C
200Hepacivirus CMutation(s): 0 
Gene Names: NS3
EC: 3.4.22 (UniProt), 3.4.21.98 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt), 2.7.7.48 (UniProt)
Find proteins for P27958 (Hepatitis C virus genotype 1a (isolate H))
Go to UniProtKB:  P27958
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Hepatitis C virus
B, D
23N/AMutation(s): 0 
Find proteins for P27958 (Hepatitis C virus genotype 1a (isolate H))
Go to UniProtKB:  P27958
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HU1
Query on HU1

Download CCD File 
A
TERT-BUTYL {(1S)-2-[(1R,2S,5S)-2-({[(1S)-3-AMINO-1-(CYCLOBUTYLMETHYL)-2,3-DIOXOPROPYL]AMINO}CARBONYL)-6,6-DIMETHYL-3-AZABICYCLO[3.1.0]HEX-3-YL]-1-CYCLOHEXYL-2-OXOETHYL}CARBAMATE
C29 H46 N4 O6
LFKITAOQQDIAJF-YFNVTMOMSA-N
 Ligand Interaction
BME
Query on BME

Download CCD File 
A
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A, C
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
HU1Ki :  15   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.199 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 224.264α = 90
b = 224.264β = 90
c = 75.451γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
X-PLORmodel building
X-PLORrefinement
HKL-2000data reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Revision History 

  • Version 1.0: 2007-07-31
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.2: 2012-02-22
    Changes: Structure summary