3BJT

Pyruvate kinase M2 is a phosphotyrosine binding protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Pyruvate kinase M2 is a phosphotyrosine-binding protein.

Christofk, H.R.Vander Heiden, M.G.Wu, N.Asara, J.M.Cantley, L.C.

(2008) Nature 452: 181-186

  • DOI: 10.1038/nature06667
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Growth factors stimulate cells to take up excess nutrients and to use them for anabolic processes. The biochemical mechanism by which this is accomplished is not fully understood but it is initiated by phosphorylation of signalling proteins on tyrosi ...

    Growth factors stimulate cells to take up excess nutrients and to use them for anabolic processes. The biochemical mechanism by which this is accomplished is not fully understood but it is initiated by phosphorylation of signalling proteins on tyrosine residues. Using a novel proteomic screen for phosphotyrosine-binding proteins, we have made the observation that an enzyme involved in glycolysis, the human M2 (fetal) isoform of pyruvate kinase (PKM2), binds directly and selectively to tyrosine-phosphorylated peptides. We show that binding of phosphotyrosine peptides to PKM2 results in release of the allosteric activator fructose-1,6-bisphosphate, leading to inhibition of PKM2 enzymatic activity. We also provide evidence that this regulation of PKM2 by phosphotyrosine signalling diverts glucose metabolites from energy production to anabolic processes when cells are stimulated by certain growth factors. Collectively, our results indicate that expression of this phosphotyrosine-binding form of pyruvate kinase is critical for rapid growth in cancer cells.


    Organizational Affiliation

    Department of Systems Biology.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Pyruvate kinase isozymes M1/M2
A, B, C, D
530Homo sapiensMutation(s): 0 
Gene Names: PKM (OIP3, PK2, PK3, PKM2)
EC: 2.7.1.40
Find proteins for P14618 (Homo sapiens)
Go to Gene View: PKM
Go to UniProtKB:  P14618
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OXL
Query on OXL

Download SDF File 
Download CCD File 
A, B, C, D
OXALATE ION
C2 O4
MUBZPKHOEPUJKR-UHFFFAOYSA-L
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.211 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 74.634α = 69.82
b = 80.707β = 77.74
c = 107.597γ = 67.97
Software Package:
Software NamePurpose
ADSCdata collection
CNSrefinement
DENZOdata reduction
HKL-2000data scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2007-12-04 
  • Released Date: 2008-03-04 
  • Deposition Author(s): Wu, N.

Revision History 

  • Version 1.0: 2008-03-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance