1CM8

PHOSPHORYLATED MAP KINASE P38-GAMMA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.232 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The structure of phosphorylated p38gamma is monomeric and reveals a conserved activation-loop conformation.

Bellon, S.Fitzgibbon, M.J.Fox, T.Hsiao, H.M.Wilson, K.P.

(1999) Structure 7: 1057-1065

  • DOI: https://doi.org/10.1016/s0969-2126(99)80173-7
  • Primary Citation of Related Structures:  
    1CM8

  • PubMed Abstract: 

    Mitogen-activated protein (MAP) kinases mediate the cellular response to stimuli such as pro-inflammatory cytokines and environmental stress. P38gamma is a new member of the MAP kinase family, and is expressed at its highest levels in skeletal muscle. P38gamma is 63% identical in sequence to P38alpha. The structure of P38alpha MAP kinase has been determined in the apo, unphosphorylated, inactive form. The structures of apo unphosphorylated ERK2, a related MAP kinase, and apo phosphorylated ERK2 have also been determined. We have determined the structure of doubly phosphorylated P38gamma in complex with an ATP analog by X-ray crystallography. This is the first report of a structure of an activated kinase in the P38 subfamily, and the first bound to a nucleotide. P38gamma residue phosphoryl-Thr183 forms hydrogen bonds with five basic amino acids, and these interactions induce an interdomain rotation. The conformation of the activation loop of P38gamma is almost identical to that observed in the structure of activated ERK2. However, unlike ERK2, the crystal structure and solution studies indicate that activated P38gamma exists as a monomer. Interactions mediated by phosphoryl-Thr183 induce structural changes that direct the domains and active-site residues of P38gamma into a conformation consistent with catalytic activity. The conformation of the phosphorylation loop is likely to be similar in all activated MAP kinases, but not all activated MAP kinases form dimers.


  • Organizational Affiliation

    Vertex Pharmaceuticals Incorporated 130 Waverly Street, Cambridge, MA 02139-4211, USA. bellon@vpharm.com.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PHOSPHORYLATED MAP KINASE P38-GAMMA
A, B
367Homo sapiensMutation(s): 2 
UniProt & NIH Common Fund Data Resources
Find proteins for P53778 (Homo sapiens)
Explore P53778 
Go to UniProtKB:  P53778
PHAROS:  P53778
GTEx:  ENSG00000188130 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP53778
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.232 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.5α = 90
b = 66.82β = 90
c = 206.02γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-05-17
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-12-27
    Changes: Data collection, Database references, Derived calculations