4H3Q

Crystal structure of human ERK2 complexed with a MAPK docking peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.184 

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Literature

Protein-peptide complex crystallization: a case study on the ERK2 mitogen-activated protein kinase

Gogl, G., Toeroe, I., Remenyi, A.

(2013) Acta Crystallogr D Biol Crystallogr 69: 486-489

  • DOI: 10.1107/S0907444912051062
  • Primary Citation of Related Structures:  
    4H3P, 4H3Q

  • PubMed Abstract: 

    • Linear motifs normally bind with only medium binding affinity (Kd of ∼0.1-10 µM) to shallow protein-interaction surfaces on their binding partners. The crystallization of proteins in complex with linear motif-containing peptides is often challenging because the energy gained upon crystal packing between symmetry mates in the crystal may be on a par with the binding energy of the protein-peptide complex ...

    Linear motifs normally bind with only medium binding affinity (Kd of ∼0.1-10 µM) to shallow protein-interaction surfaces on their binding partners. The crystallization of proteins in complex with linear motif-containing peptides is often challenging because the energy gained upon crystal packing between symmetry mates in the crystal may be on a par with the binding energy of the protein-peptide complex. Furthermore, for extracellular signal-regulated kinase 2 (ERK2) the protein-peptide docking surface is comprised of a small hydrophobic surface patch that is often engaged in the crystal packing of apo ERK2 crystals. Here, a rational surface-engineering approach is presented that involves mutating protein surface residues that are distant from the peptide-binding ERK2 docking groove to alanines. These ERK2 surface mutations decrease the chance of `unwanted' crystal packing of ERK2 and the approach led to the structure determination of ERK2 in complex with new docking peptides. These findings highlight the importance of negative selection in crystal engineering for weakly binding protein-peptide complexes.

    Organizational Affiliation: 

    Department of Biochemistry, Eötvös Loránd University, Pázmány Péter sétány 1/C, 1117 Budapest, Hungary.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 1 A362Homo sapiensMutation(s): 4 
Gene Names: MAPK1, ERK2, PRKM1, PRKM2
EC: 2.7.11.24
Find proteins for P28482 (Homo sapiens)
Explore P28482 
Go to UniProtKB:  P28482
NIH Common Fund Data Resources
PHAROS:  P28482
GTEx:  ENSG00000100030
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Dual specificity mitogen-activated protein kinase kinase 2 B13Homo sapiensMutation(s): 0 
Gene Names: MAP2K2, MEK2, MKK2, PRKMK2
EC: 2.7.12.2
Find proteins for P36507 (Homo sapiens)
Explore P36507 
Go to UniProtKB:  P36507
NIH Common Fund Data Resources
PHAROS:  P36507
GTEx:  ENSG00000126934
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP
Download Ideal Coordinates CCD File 
A
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.75α = 90
b = 58.53β = 90
c = 159.15γ = 90
Software Package:
Software NamePurpose
XDSdata scaling
PHASERphasing
PHENIXrefinement
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-02-27
    Type: Initial release
  • Version 1.1: 2013-06-26
    Changes: Database references