3TNE

The crystal structure of protease Sapp1p from Candida parapsilosis in complex with the HIV protease inhibitor ritonavir


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of protease Sapp1p from Candida parapsilosis in complex with the HIV protease inhibitor ritonavir.

Dostal, J.Brynda, J.Hruskova-Heidingsfeldova, O.Pachl, P.Pichova, I.Rezacova, P.

(2012) J Enzyme Inhib Med Chem 27: 160-165

  • DOI: 10.3109/14756366.2011.627508

  • PubMed Abstract: 
  • Secreted aspartic proteases (Saps) are extracellular proteolytic enzymes that enhance the virulence of Candida pathogens. These enzymes therefore represent possible targets for therapeutic drug design. Saps are inhibited by nanomolar concentrations o ...

    Secreted aspartic proteases (Saps) are extracellular proteolytic enzymes that enhance the virulence of Candida pathogens. These enzymes therefore represent possible targets for therapeutic drug design. Saps are inhibited by nanomolar concentrations of the classical inhibitor of aspartic proteases pepstatin A and also by the inhibitors of the HIV protease, but with the K(i) of micromolar values or higher. To contribute to the discussion regarding whether HIV protease inhibitors can act against opportunistic mycoses by the inhibition of Saps, we determined the structure of Sapp1p from Candida parapsilosis in complex with ritonavir (RTV), a clinically used inhibitor of the HIV protease. The crystal structure refined at resolution 2.4 Å proved binding of RTV into the active site of Sapp1p and provided the structural information necessary to evaluate the stability and specificity of the protein-inhibitor interaction.


    Organizational Affiliation

    Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic , v.v.i., Prague, Czech Republic.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Secreted aspartic protease
A, B
339Candida parapsilosisMutation(s): 0 
Gene Names: SAPP1 (ACPR)
EC: 3.4.23.24
Find proteins for P32951 (Candida parapsilosis)
Go to UniProtKB:  P32951
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RIT
Query on RIT

Download SDF File 
Download CCD File 
A, B
RITONAVIR
A-84538
C37 H48 N6 O5 S2
NCDNCNXCDXHOMX-XGKFQTDJSA-N
 Ligand Interaction
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_001001 (RIT)
Query on PRD_001001
A,BRITONAVIRPeptide-like / Inhibitor

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.254 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 61.870α = 90.00
b = 61.610β = 90.00
c = 157.770γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction
MOLREPphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-03-07
    Type: Initial release
  • Version 1.1: 2012-03-14
    Type: Database references
  • Version 1.2: 2012-12-12
    Type: Other