Crystal structure of ERK2 bound to (S)-4-(2-(2-chlorophenylamino)-5-methylpyrimidin-4-yl)-N-(2-hydroxy-1-phenylethyl)-1H-pyrrole-2-carboxamide

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 

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This is version 1.4 of the entry. See complete history


Structure-guided design of potent and selective pyrimidylpyrrole inhibitors of extracellular signal-regulated kinase (ERK) using conformational control.

Aronov, A.M.Tang, Q.Martinez-Botella, G.Bemis, G.W.Cao, J.Chen, G.Ewing, N.P.Ford, P.J.Germann, U.A.Green, J.Hale, M.R.Jacobs, M.Janetka, J.W.Maltais, F.Markland, W.Namchuk, M.N.Nanthakumar, S.Poondru, S.Straub, J.ter Haar, E.Xie, X.

(2009) J Med Chem 52: 6362-6368

  • DOI: https://doi.org/10.1021/jm900630q
  • Primary Citation of Related Structures:  
    3I4B, 3I5Z, 3I60

  • PubMed Abstract: 

    The Ras/Raf/MEK/ERK signal transduction, an oncogenic pathway implicated in a variety of human cancers, is a key target in anticancer drug design. A novel series of pyrimidylpyrrole ERK inhibitors has been identified. Discovery of a conformational change for lead compound 2, when bound to ERK2 relative to antitarget GSK3, enabled structure-guided selectivity optimization, which led to the discovery of 11e, a potent, selective, and orally bioavailable inhibitor of ERK.

  • Organizational Affiliation

    Vertex Pharmaceuticals Inc., 130 Waverly Street, Cambridge, Massachusetts 02139-4242, USA. alex_aronov@vrtx.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 1380Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P28482 (Homo sapiens)
Explore P28482 
Go to UniProtKB:  P28482
GTEx:  ENSG00000100030 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP28482
Sequence Annotations
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
E86 BindingDB:  3I60 Ki: 2 (nM) from 1 assay(s)
PDBBind:  3I60 Ki: 2 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.061α = 90
b = 70.251β = 90
c = 119.598γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-01-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2017-11-01
    Changes: Refinement description
  • Version 1.3: 2024-02-21
    Changes: Data collection, Database references, Derived calculations
  • Version 1.4: 2024-04-03
    Changes: Refinement description