2X9V

High resolution structure of TbPTR1 with trimetrexate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 
    0.148 (Depositor), 0.160 (DCC) 
  • R-Value Work: 
    0.121 (Depositor), 0.130 (DCC) 
  • R-Value Observed: 
    0.123 (Depositor) 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted NAPClick on this verticalbar to view detailsBest fitted TMQClick on this verticalbar to view details

This is version 1.2 of the entry. See complete history


Literature

High-Resolution Structures of Trypanosoma Brucei Pteridine Reductase Ligand Complexes Inform on the Placement of New Molecular Entities in the Active Site of a Potential Drug Target

Dawson, A.Tulloch, L.B.Barrack, K.L.Hunter, W.N.

(2010) Acta Crystallogr D Biol Crystallogr 66: 1334

  • DOI: https://doi.org/10.1107/S0907444910040886
  • Primary Citation of Related Structures:  
    2X9G, 2X9N, 2X9V, 3MCV

  • PubMed Abstract: 

    Pteridine reductase (PTR1) is a potential target for drug development against parasitic Trypanosoma and Leishmania species. These protozoa cause serious diseases for which current therapies are inadequate. High-resolution structures have been determined, using data between 1.6 and 1.1 Å resolution, of T. brucei PTR1 in complex with pemetrexed, trimetrexate, cyromazine and a 2,4-diaminopyrimidine derivative. The structures provide insight into the interactions formed by new molecular entities in the enzyme active site with ligands that represent lead compounds for structure-based inhibitor development and to support early-stage drug discovery.


  • Organizational Affiliation

    Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, Dundee DD15EH, Scotland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PTERIDINE REDUCTASE
A, B, C, D
288Trypanosoma brucei bruceiMutation(s): 0 
EC: 1.5.1.33
UniProt
Find proteins for O76290 (Trypanosoma brucei brucei)
Explore O76290 
Go to UniProtKB:  O76290
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO76290
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAP
Query on NAP

Download Ideal Coordinates CCD File 
E [auth A],
H [auth B],
L [auth C],
P [auth D]
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
TMQ
Query on TMQ

Download Ideal Coordinates CCD File 
F [auth A],
I [auth B],
M [auth C],
Q [auth D]
TRIMETREXATE
C19 H24 N5 O3
NOYPYLRCIDNJJB-UHFFFAOYSA-O
ACT
Query on ACT

Download Ideal Coordinates CCD File 
G [auth A]
J [auth B]
K [auth B]
N [auth C]
O [auth C]
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free:  0.148 (Depositor), 0.160 (DCC) 
  • R-Value Work:  0.121 (Depositor), 0.130 (DCC) 
  • R-Value Observed: 0.123 (Depositor) 
Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.56α = 90
b = 90.71β = 115.69
c = 82.46γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted NAPClick on this verticalbar to view detailsBest fitted TMQClick on this verticalbar to view details

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-06-23
    Type: Initial release
  • Version 1.1: 2012-04-11
    Changes: Database references, Refinement description, Version format compliance
  • Version 1.2: 2024-05-08
    Changes: Data collection, Database references, Derived calculations, Other