3D1V

Crystal structure of human PNP complexed with 2-mercapto(3H) quinazolinone


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural studies of human purine nucleoside phosphorylase: towards a new specific empirical scoring function

Timmers, L.F.Caceres, R.A.Vivan, A.L.Gava, L.M.Dias, R.Ducati, R.G.Basso, L.A.Santos, D.S.de Azevedo, W.F.

(2008) Arch.Biochem.Biophys. 479: 28-38

  • DOI: 10.1016/j.abb.2008.08.015

  • PubMed Abstract: 
  • Human purine nucleoside phosphorylase (HsPNP) is a target for inhibitor development aiming at T-cell immune response modulation. In this work, we report the development of a new set of empirical scoring functions and its application to evaluate bindi ...

    Human purine nucleoside phosphorylase (HsPNP) is a target for inhibitor development aiming at T-cell immune response modulation. In this work, we report the development of a new set of empirical scoring functions and its application to evaluate binding affinities and docking results. To test these new functions, we solved the structure of HsPNP and 2-mercapto-4(3H)-quinazolinone (HsPNP:MQU) binary complex at 2.7A resolution using synchrotron radiation, and used these functions to predict ligand position obtained in docking simulations. We also employed molecular dynamics simulations to analyze HsPNP in two conditions, as apoenzyme and in the binary complex form, in order to assess the structural features responsible for stability. Analysis of the structural differences between systems provides explanation for inhibitor binding. The use of these scoring functions to evaluate binding affinities and molecular docking results may be used to guide future efforts on virtual screening focused on HsPNP.


    Related Citations: 
    • Crystal Structure of Human Purine Nucleoside Phosphorylase at 2.3A Resolution
      De Azevedo Jr., W.F.,Canduri, F.,Dos Santos, D.M.,Silva, R.G.,De Oliveira, J.S.,De Carvalho, L.P.S.,Basso, L.A.,Mendes, M.A.,Palma, M.S.,Santos, D.S.
      (2003) Biochem.Biophys.Res.Commun. 308: 545


    Organizational Affiliation

    Faculdade de Biociências, Laboratório de Bioquímica Estrutural, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Purine nucleoside phosphorylase
A
289Homo sapiensMutation(s): 0 
Gene Names: PNP (NP)
EC: 2.4.2.1
Find proteins for P00491 (Homo sapiens)
Go to Gene View: PNP
Go to UniProtKB:  P00491
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
D1V
Query on D1V

Download SDF File 
Download CCD File 
A
2-mercapto(3H)quinazolinone
2-sulfanylquinazolin-4(3H)-one
C8 H6 N2 O S
PUPFOFVEHDNUJU-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
D1VKd: 324000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.221 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 138.666α = 90.00
b = 138.666β = 90.00
c = 159.379γ = 120.00
Software Package:
Software NamePurpose
AMoREphasing
CCP4data scaling
MOSFLMdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-07-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance