1GH6

RETINOBLASTOMA POCKET COMPLEXED WITH SV40 LARGE T ANTIGEN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.248 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structural basis for the inactivation of retinoblastoma tumor suppressor by SV40 large T antigen.

Kim, H.Y.Ahn, B.Y.Cho, Y.

(2001) EMBO J 20: 295-304

  • DOI: https://doi.org/10.1093/emboj/20.1.295
  • Primary Citation of Related Structures:  
    1GH6

  • PubMed Abstract: 

    Inactivation of the retinoblastoma (Rb) tumor suppressor by Simian virus 40 (SV40) large T antigen is one of the central features of tumorigenesis induced by SV40. Both the N-terminal J domain and the LxCxE motif of large T antigen are required for inactivation of Rb. The crystal structure of the N-terminal region (residues 7-117) of SV40 large T antigen bound to the pocket domain of Rb reveals that large T antigen contains a four-helix bundle, and residues from helices alpha2 and alpha4 and from a loop containing the LxCxE motif participate in the interactions with Rb. The two central helices and a connecting loop in large T antigen have structural similarities with the J domains of the molecular chaperones DnaJ and HDJ-1, suggesting that large T antigen may use a chaperone mechanism for its biological function. However, there are significant differences between large T antigen and the molecular chaperones in other regions and these differences are likely to provide the specificity needed for large T antigen to inactivate Rb.


  • Organizational Affiliation

    Division of Molecular and Life Science, Pohang University of Science and Technology, Hyo-ja dong, San31, Pohang, Seoul, South Korea.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Large T antigen114Betapolyomavirus macacaeMutation(s): 0 
EC: 3.6.4 (PDB Primary Data), 5.6.2.4 (UniProt)
UniProt
Find proteins for P03070 (Simian virus 40)
Explore P03070 
Go to UniProtKB:  P03070
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03070
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Retinoblastoma-associated protein333Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P06400 (Homo sapiens)
Explore P06400 
Go to UniProtKB:  P06400
PHAROS:  P06400
GTEx:  ENSG00000139687 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06400
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.248 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 127.13α = 90
b = 127.13β = 90
c = 96.19γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-11-15
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-06-28
    Changes: Database references, Source and taxonomy, Structure summary
  • Version 1.4: 2023-08-09
    Changes: Data collection, Database references, Refinement description