2BZ8

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.271 
  • R-Value Work: 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:  

  • 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 re ...

    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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SH3-DOMAIN KINASE BINDING PROTEIN 1
A, B
58Homo sapiensMutation(s): 0 
Gene Names: SH3KBP1 (CIN85)
Find proteins for Q96B97 (Homo sapiens)
Go to Gene View: SH3KBP1
Go to UniProtKB:  Q96B97
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SIGNAL TRANSDUCTION PROTEIN CBL-B SH3-BINDING PROTEIN CBL-B, RING FINGER PROTEIN 56, CBL-B
C
11Homo sapiensMutation(s): 0 
Gene Names: CBLB (RNF56)
EC: 2.3.2.27
Find proteins for Q13191 (Homo sapiens)
Go to Gene View: CBLB
Go to UniProtKB:  Q13191
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A, B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.221 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 51.158α = 90.00
b = 51.158β = 90.00
c = 97.472γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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