4ELL

Structure of the inactive retinoblastoma protein pocket domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of inactive retinoblastoma protein reveal multiple mechanisms for cell cycle control.

Burke, J.R.Hura, G.L.Rubin, S.M.

(2012) Genes Dev. 26: 1156-1166

  • DOI: 10.1101/gad.189837.112
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cyclin-dependent kinase (Cdk) phosphorylation of the Retinoblastoma protein (Rb) drives cell proliferation through inhibition of Rb complexes with E2F transcription factors and other regulatory proteins. We present the first structures of phosphoryla ...

    Cyclin-dependent kinase (Cdk) phosphorylation of the Retinoblastoma protein (Rb) drives cell proliferation through inhibition of Rb complexes with E2F transcription factors and other regulatory proteins. We present the first structures of phosphorylated Rb that reveal the mechanism of its inactivation. S608 phosphorylation orders a flexible "pocket" domain loop such that it mimics and directly blocks E2F transactivation domain (E2F(TD)) binding. T373 phosphorylation induces a global conformational change that associates the pocket and N-terminal domains (RbN). This first multidomain Rb structure demonstrates a novel role for RbN in allosterically inhibiting the E2F(TD)-pocket association and protein binding to the pocket "LxCxE" site. Together, these structures detail the regulatory mechanism for a canonical growth-repressive complex and provide a novel example of how multisite Cdk phosphorylation induces diverse structural changes to influence cell cycle signaling.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California at Santa Cruz, Santa Cruz, California 95064, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Retinoblastoma-associated protein
A, B
411Homo sapiensMutation(s): 2 
Gene Names: RB1
Find proteins for P06400 (Homo sapiens)
Go to Gene View: RB1
Go to UniProtKB:  P06400
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.193 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 249.659α = 90.00
b = 249.659β = 90.00
c = 35.110γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
MOSFLMdata reduction
PHENIXrefinement
Blu-Icedata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-23
    Type: Initial release
  • Version 1.1: 2012-08-15
    Type: Database references