1WBU

Fragment based lead discovery using crystallography


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Fragment-Based Lead Discovery Using X-Ray Crystallography

Hartshorn, M.J.Murray, C.W.Cleasby, A.Frederickson, M.Tickle, I.J.Jhoti, H.

(2005) J Med Chem 48: 403

  • DOI: https://doi.org/10.1021/jm0495778
  • Primary Citation of Related Structures:  
    1W7H, 1WAX, 1WAY, 1WBG, 1WBO, 1WBU, 1WCC

  • PubMed Abstract: 

    Fragment screening offers an alternative to traditional screening for discovering new leads in drug discovery programs. This paper describes a fragment screening methodology based on high throughput X-ray crystallography. The method is illustrated against five proteins (p38 MAP kinase, CDK2, thrombin, ribonuclease A, and PTP1B). The fragments identified have weak potency (>100 microM) but are efficient binders relative to their size and may therefore represent suitable starting points for evolution to good quality lead compounds. The examples illustrate that a range of molecular interactions (i.e., lipophilic, charge-charge, neutral hydrogen bonds) can drive fragment binding and also that fragments can induce protein movement. We believe that the method has great potential for the discovery of novel lead compounds against a range of targets, and the companion paper illustrates how lead compounds have been identified for p38 MAP kinase starting from fragments such as those described in this paper.


  • Organizational Affiliation

    Astex Technology, 436 Cambridge Science Park, Milton Road, Cambridge, CB4 0QA, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RIBONUCLEASE
A, B
124Bos taurusMutation(s): 0 
EC: 3.1.27.5
UniProt
Find proteins for P61823 (Bos taurus)
Explore P61823 
Go to UniProtKB:  P61823
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP61823
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
WBU
Query on WBU

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
5-AMINO-1H-PYRIMIDINE-2,4-DIONE
C4 H5 N3 O2
BISHACNKZIBDFM-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.207 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.035α = 90
b = 32.604β = 90.7
c = 72.321γ = 90
Software Package:
Software NamePurpose
CNSrefinement
d*TREKdata reduction
d*TREKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-01-27
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance