4NM5

Crystal structure of GSK-3/Axin complex bound to phosphorylated Wnt receptor LRP6 c-motif


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis of GSK-3 inhibition by N-terminal phosphorylation and by the Wnt receptor LRP6.

Stamos, J.L.Chu, M.L.Enos, M.D.Shah, N.Weis, W.I.

(2014) Elife 3: e01998-e01998

  • DOI: 10.7554/eLife.01998
  • Primary Citation of Related Structures:  
    4NM0, 4NM3, 4NM5, 4NM7, 4NU1

  • PubMed Abstract: 
  • Glycogen synthase kinase-3 (GSK-3) is a key regulator of many cellular signaling pathways. Unlike most kinases, GSK-3 is controlled by inhibition rather than by specific activation. In the insulin and several other signaling pathways, phosphorylation of a serine present in a conserved sequence near the amino terminus of GSK-3 generates an auto-inhibitory peptide ...

    Glycogen synthase kinase-3 (GSK-3) is a key regulator of many cellular signaling pathways. Unlike most kinases, GSK-3 is controlled by inhibition rather than by specific activation. In the insulin and several other signaling pathways, phosphorylation of a serine present in a conserved sequence near the amino terminus of GSK-3 generates an auto-inhibitory peptide. In contrast, Wnt/β-catenin signal transduction requires phosphorylation of Ser/Pro rich sequences present in the Wnt co-receptors LRP5/6, and these motifs inhibit GSK-3 activity. We present crystal structures of GSK-3 bound to its phosphorylated N-terminus and to two of the phosphorylated LRP6 motifs. A conserved loop unique to GSK-3 undergoes a dramatic conformational change that clamps the bound pseudo-substrate peptides, and reveals the mechanism of primed substrate recognition. The structures rationalize target sequence preferences and suggest avenues for the design of inhibitors selective for a subset of pathways regulated by GSK-3. DOI: http://dx.doi.org/10.7554/eLife.01998.001.


    Organizational Affiliation

    Department of Structural Biology, Stanford University, Stanford, United States.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GSK3B proteinA377Homo sapiensMutation(s): 0 
Gene Names: GSK3BhCG_1818062
EC: 2.7.11.26 (PDB Primary Data), 2.7.11.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P49841 (Homo sapiens)
Explore P49841 
Go to UniProtKB:  P49841
PHAROS:  P49841
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Axin-1B24Homo sapiensMutation(s): 0 
Gene Names: AXIN1AXIN
UniProt & NIH Common Fund Data Resources
Find proteins for O15169 (Homo sapiens)
Explore O15169 
Go to UniProtKB:  O15169
PHAROS:  O15169
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Phosphorylated Wnt receptor LRP6 c-motifC9Homo sapiensMutation(s): 0 
Gene Names: LRP6
UniProt & NIH Common Fund Data Resources
Find proteins for O75581 (Homo sapiens)
Explore O75581 
Go to UniProtKB:  O75581
PHAROS:  O75581
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
CL-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.185 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.727α = 90
b = 81.727β = 90
c = 280.937γ = 120
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
Blu-Icedata collection
XDSdata reduction
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-03-26
    Type: Initial release
  • Version 1.1: 2014-04-23
    Changes: Database references