ERK2 mini-fragment binding

Experimental Data Snapshot

  • Resolution: 2.07 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.187 

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This is version 1.1 of the entry. See complete history


Crystallographic screening using ultra-low-molecular-weight ligands to guide drug design.

O'Reilly, M.Cleasby, A.Davies, T.G.Hall, R.J.Ludlow, R.F.Murray, C.W.Tisi, D.Jhoti, H.

(2019) Drug Discov Today 24: 1081-1086

  • DOI: https://doi.org/10.1016/j.drudis.2019.03.009
  • Primary Citation of Related Structures:  
    6Q7K, 6Q7S, 6Q7T, 6QA1, 6QA3, 6QA4, 6QAG, 6QAH, 6QAL, 6QAQ, 6QAW

  • PubMed Abstract: 

    We present a novel crystallographic screening methodology (MiniFrags) that employs high-concentration aqueous soaks with a chemically diverse and ultra-low-molecular-weight library (heavy atom count 5-7) to identify ligand-binding hot and warm spots on proteins. We propose that MiniFrag screening represents a highly effective method for guiding optimisation of fragment-derived lead compounds or chemical tools and that the high screening hit rates reflect enhanced sampling of chemical space.

  • Organizational Affiliation

    Astex Pharmaceuticals,436 Cambridge Science Park, Milton Road, Cambridge, CB4 0QA, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 1368Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P28482 (Homo sapiens)
Explore P28482 
Go to UniProtKB:  P28482
PHAROS:  P28482
GTEx:  ENSG00000100030 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP28482
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.07 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.187 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.602α = 90
b = 69.189β = 109.39
c = 59.935γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-27
    Type: Initial release
  • Version 1.1: 2019-05-22
    Changes: Data collection, Database references