2BZ8

N-terminal Sh3 domain of CIN85 bound to Cbl-b peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.221 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Cbl Promotes Clustering of Endocytic Adaptor Proteins

Jozic, D., Cardenes, N., Lissanu-Deribe, Y., Moncalian, G., Hoeller, D., Groemping, Y., Dikic, I., Rittinger, K., Bravo, J.

(2005) Nat Struct Mol Biol 12: 972

  • DOI: 10.1038/nsmb1000
  • Primary Citation of Related Structures:  
    2AK5, 2BZ8

  • PubMed Abstract: 

    • The ubiquitin ligases c-Cbl and Cbl-b play a crucial role in receptor downregulation by mediating multiple monoubiquitination of receptors and promoting their sorting for lysosomal degradation. Their function is modulated through interactions with regulatory proteins including CIN85 and PIX, which recognize a proline-arginine motif in Cbl and thus promote or inhibit receptor endocytosis ...

    The ubiquitin ligases c-Cbl and Cbl-b play a crucial role in receptor downregulation by mediating multiple monoubiquitination of receptors and promoting their sorting for lysosomal degradation. Their function is modulated through interactions with regulatory proteins including CIN85 and PIX, which recognize a proline-arginine motif in Cbl and thus promote or inhibit receptor endocytosis. We report the structures of SH3 domains of CIN85 and beta-PIX in complex with a proline-arginine peptide from Cbl-b. Both structures reveal a heterotrimeric complex containing two SH3 domains held together by a single peptide. Trimerization also occurs in solution and is facilitated by the pseudo-symmetrical peptide sequence. Moreover, ternary complexes of CIN85 and Cbl are formed in vivo and are important for the ability of Cbl to promote epidermal growth factor receptor (EGFR) downregulation. These results provide molecular explanations for a novel mechanism by which Cbl controls receptor downregulation.

    Organizational Affiliation: 

    Division of Protein Structure, National Institute for Medical Research, The Ridgeway, London NW7 1AA, UK.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SH3-DOMAIN KINASE BINDING PROTEIN 1A, B58Homo sapiensMutation(s): 0 
Gene Names: SH3KBP1, CIN85
UniProt & NIH Common Fund Data Resources
Find proteins for Q96B97 (Homo sapiens)
Explore Q96B97 
Go to UniProtKB:  Q96B97
PHAROS:  Q96B97
GTEx:  ENSG00000147010 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96B97
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SIGNAL TRANSDUCTION PROTEIN CBL-B SH3-BINDING PROTEIN CBL-B, RING FINGER PROTEIN 56, CBL-BC11Homo sapiensMutation(s): 0 
Gene Names: CBLB, RNF56, Nbla00127
EC: 2.3.2.27
UniProt & NIH Common Fund Data Resources
Find proteins for Q13191 (Homo sapiens)
Explore Q13191 
Go to UniProtKB:  Q13191
PHAROS:  Q13191
GTEx:  ENSG00000114423 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13191
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA
Download Ideal Coordinates CCD File 
D [auth A],
E [auth B]		SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.221 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.158α = 90
b = 51.158β = 90
c = 97.472γ = 120
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-10-05
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-04-04
    Changes: Data collection