5LCK

A Clickable Covalent ERK 1/2 Inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

In-gel activity-based protein profiling of a clickable covalent ERK1/2 inhibitor.

Lebraud, H.Wright, D.J.East, C.E.Holding, F.P.O'Reilly, M.Heightman, T.D.

(2016) Mol Biosyst 12: 2867-2874

  • DOI: 10.1039/c6mb00367b
  • Primary Citation of Related Structures:  
    5LCJ, 5LCK

  • PubMed Abstract: 
  • In-gel activity-based protein profiling (ABPP) offers rapid assessment of the proteome-wide selectivity and target engagement of a chemical tool. Here we demonstrate the use of the inverse electron demand Diels Alder (IEDDA) click reaction for in-gel ABPP by evaluating the selectivity profile and target engagement of a covalent ERK1/2 probe tagged with a trans-cyclooctene group ...

    In-gel activity-based protein profiling (ABPP) offers rapid assessment of the proteome-wide selectivity and target engagement of a chemical tool. Here we demonstrate the use of the inverse electron demand Diels Alder (IEDDA) click reaction for in-gel ABPP by evaluating the selectivity profile and target engagement of a covalent ERK1/2 probe tagged with a trans-cyclooctene group. The chemical probe was shown to bind covalently to Cys166 of ERK2 using protein MS and X-ray crystallography, and displayed submicromolar GI50s in A375 and HCT116 cells. In both cell lines, the probe demonstrated target engagement and a good selectivity profile at low concentrations, which was lost at higher concentrations. The IEDDA cycloaddition enabled fast and quantitative fluorescent tagging for readout with a high background-to-noise ratio and thereby provides a promising alternative to the commonly used copper catalysed alkyne-azide cycloaddition.


    Organizational Affiliation

    Astex Pharmaceuticals, 436 Cambridge Science Park, Cambridge, CB4 0QA, UK. Tom.Heightman@astx.com.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 1A360Homo sapiensMutation(s): 0 
Gene Names: MAPK1ERK2PRKM1PRKM2
EC: 2.7.11.24
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
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
6TT
Query on 6TT

Download Ideal Coordinates CCD File 
F [auth A]~{N}-[2-[[2-[(5-methoxypyridin-3-yl)amino]-5-(trifluoromethyl)pyrimidin-4-yl]amino]phenyl]propanamide
C20 H19 F3 N6 O2
GGUZEGQAJBEJAF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A],
E [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CME
Query on CME
A L-PEPTIDE LINKINGC5 H11 N O3 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.861α = 90
b = 70.909β = 109.43
c = 60.417γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
iMOSFLMdata reduction
SCALAdata scaling
REFMACphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-07-20
    Type: Initial release
  • Version 1.1: 2016-08-31
    Changes: Database references
  • Version 1.2: 2018-03-28
    Changes: Source and taxonomy