1N4M

Structure of Rb tumor suppressor bound to the transactivation domain of E2F-2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for the recognition of the E2F transactivation domain by the retinoblastoma tumor suppressor

Lee, C.Chang, J.H.Lee, H.S.Cho, Y.

(2002) GENES DEV. 16: 3199-3212

  • DOI: 10.1101/gad.1046102

  • PubMed Abstract: 
  • Repression of E2F transcription activity by the retinoblastoma (Rb) tumor suppressor through its interaction with the transactivation domain of the E2F transcription factor is one of the central features of G1/S arrest in the mammalian cell cycle. De ...

    Repression of E2F transcription activity by the retinoblastoma (Rb) tumor suppressor through its interaction with the transactivation domain of the E2F transcription factor is one of the central features of G1/S arrest in the mammalian cell cycle. Deregulation of the Rb-E2F interaction results in hyperproliferation, lack of differentiation, and apoptosis, and can lead to cancer. The 2.2-A crystal structure of the Rb pocket complexed with an 18-residue transactivation-domain peptide of E2F-2 reveals that the boomerang-shaped peptide binds to the highly conserved interface between the A-box and the B-box of the Rb pocket in a bipartite manner. The N-terminal segment of the E2F-2 peptide in an extended beta-strand-like structure interacts with helices from the conserved groove at the A-B interface, whereas the C-terminal segment, which contains one 3(10) helix, binds to a groove mainly formed by A-box helices. The flexibility in the middle of the E2F-2 peptide is essential for the tight association of E2F to the Rb pocket. The binding of Rb to the E2F-2 peptide conceals several conserved residues that are crucial for transcription activation of E2F. We provide the structural basis for the Rb-mediated repression of E2F transcription activity without the requirement of histone-modifying enzymes.


    Organizational Affiliation

    National Creative Research Center for Structural Biology and Department of Life Science, Pohang University of Science and Technology, San 31, KyungBook, South Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Retinoblastoma Pocket
A, B
345Homo sapiensGene Names: RB1
Find proteins for P06400 (Homo sapiens)
Go to Gene View: RB1
Go to UniProtKB:  P06400
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Transcription factor E2F2
C, D, E
18Homo sapiensGene Names: E2F2
Find proteins for Q14209 (Homo sapiens)
Go to Gene View: E2F2
Go to UniProtKB:  Q14209
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.222 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 54.369α = 85.55
b = 65.164β = 79.48
c = 69.339γ = 67.16
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-07
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance