4A4C

Structure of phosphoTyr371-c-Cbl-UbcH5B-ZAP-70 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 

Starting Models: experimental
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This is version 1.4 of the entry. See complete history


Literature

Structural Basis for Autoinhibition and Phosphorylation-Dependent Activation of C-Cbl

Dou, H.Buetow, L.Hock, A.Sibbet, G.J.Vousden, K.H.Huang, D.T.

(2012) Nat Struct Mol Biol 19: 184

  • DOI: https://doi.org/10.1038/nsmb.2231
  • Primary Citation of Related Structures:  
    2Y1M, 2Y1N, 4A49, 4A4B, 4A4C

  • PubMed Abstract: 

    Cbls are RING ubiquitin ligases that attenuate receptor tyrosine kinase (RTK) signal transduction. Cbl ubiquitination activity is stimulated by phosphorylation of a linker helix region (LHR) tyrosine residue. To elucidate the mechanism of activation, we determined the structures of human CBL, a CBL-substrate peptide complex and a phosphorylated-Tyr371-CBL-E2-substrate peptide complex, and we compared them with the known structure of a CBL-E2-substrate peptide complex. Structural and biochemical analyses show that CBL adopts an autoinhibited RING conformation, where the RING's E2-binding surface associates with CBL to reduce E2 affinity. Tyr371 phosphorylation activates CBL by inducing LHR conformational changes that eliminate autoinhibition, flip the RING domain and E2 into proximity of the substrate-binding site and transform the RING domain into an enhanced E2-binding module. This activation is required for RTK ubiquitination. Our results present a mechanism for regulation of c-Cbl's activity by autoinhibition and phosphorylation-induced activation.


  • Organizational Affiliation

    The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Glasgow, G61 1BD, United Kingdom.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
E3 UBIQUITIN-PROTEIN LIGASE CBL391Homo sapiensMutation(s): 0 
EC: 6.3.2 (PDB Primary Data), 2.3.2.27 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P22681 (Homo sapiens)
Explore P22681 
Go to UniProtKB:  P22681
PHAROS:  P22681
GTEx:  ENSG00000110395 
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Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP22681
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
TYROSINE-PROTEIN KINASE ZAP-7012Homo sapiensMutation(s): 0 
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for P43403 (Homo sapiens)
Explore P43403 
Go to UniProtKB:  P43403
PHAROS:  P43403
GTEx:  ENSG00000115085 
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UniProt GroupP43403
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
UBIQUITIN-CONJUGATING ENZYME E2 D2147Homo sapiensMutation(s): 0 
EC: 6.3.2.19 (PDB Primary Data), 2.3.2.24 (UniProt), 2.3.2.23 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P62837 (Homo sapiens)
Explore P62837 
Go to UniProtKB:  P62837
PHAROS:  P62837
GTEx:  ENSG00000131508 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP62837
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.285α = 90
b = 75.285β = 90
c = 459.66γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-25
    Type: Initial release
  • Version 1.1: 2012-02-29
    Changes: Other
  • Version 1.2: 2019-04-03
    Changes: Advisory, Data collection, Derived calculations, Experimental preparation, Other
  • Version 1.3: 2023-12-20
    Changes: Advisory, Data collection, Database references, Derived calculations, Other, Refinement description
  • Version 1.4: 2024-11-20
    Changes: Structure summary