2K6D

CIN85 Sh3-C domain in complex with ubiquitin

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 8 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Interactions between the three CIN85 SH3 domains and ubiquitin: implications for CIN85 ubiquitination.

Bezsonova, I., Bruce, M.C., Wiesner, S., Lin, H., Rotin, D., Forman-Kay, J.D.

(2008) Biochemistry 47: 8937-8949

  • DOI: 10.1021/bi800439t
  • Primary Citation of Related Structures:  
    2K6D

  • PubMed Abstract: 

    • CIN85 is an adaptor protein linking the ubiquitin ligase Cbl and clathrin-binding proteins in clathrin-mediated receptor endocytosis. The SH3 domains of CIN85 bind to a proline-rich region of Cbl. Here we show that all three SH3 domains of CIN85 bind to ...

    CIN85 is an adaptor protein linking the ubiquitin ligase Cbl and clathrin-binding proteins in clathrin-mediated receptor endocytosis. The SH3 domains of CIN85 bind to a proline-rich region of Cbl. Here we show that all three SH3 domains of CIN85 bind to ubiquitin. We also present a data-based structural model of the CIN85 SH3-C domain in complex with ubiquitin. In this complex, ubiquitin binds to the canonical interaction surface of the SH3 domain for proline-rich ligands and mimics the PPII helix, and we provide evidence that ubiquitin competes with these ligands for binding. We demonstrate that disruption of ubiquitin binding results in constitutive ubiquitination of CIN85 and an increased level of ubiquitination of EGFR in the absence of EGF stimulation. These results suggest that competition between Cbl and ubiquitin binding to CIN85 regulates Cbl function and EGFR endocytosis.

    Organizational Affiliation: 

    Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 1A8.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SH3 domain-containing kinase-binding protein 1 A62Homo sapiensMutation(s): 0 
Gene Names: SH3KBP1, CIN85
Find proteins for Q96B97 (Homo sapiens)
Explore Q96B97 
Go to UniProtKB:  Q96B97
NIH Common Fund Data Resources
PHAROS:  Q96B97
GTEx:  ENSG00000147010
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin B76Homo sapiensMutation(s): 0 
Gene Names: RPS27A, UBA80, UBCEP1, UBA52, UBCEP2, UBB, UBC
Find proteins for P0CG48 (Homo sapiens)
Explore P0CG48 
Go to UniProtKB:  P0CG48
NIH Common Fund Data Resources
PHAROS:  P0CG48
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 8 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2K6D Olderado

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-08-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-07-04
    Changes: Data collection, Derived calculations, Experimental preparation