Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 44.53 kDa 
• Atom Count: 3097 
• Residue Count: 327 
• Unique protein chains: 3

1GUX

RB POCKET BOUND TO E7 LXCXE MOTIF

• DOI: 10.2210/pdb1GUX/pdb

• Classification: COMPLEX (TRANSCRIPTION REG/PEPTIDE)
• Organism(s): Homo sapiens, Human papillomavirus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1997-11-15 Released: 1998-12-02 
• Deposition Author(s): Lee, J.O., Russo, A.A., Pavletich, N.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.289 
• R-Value Work: 0.218 
• R-Value Observed: 0.218 

Literature

Structure of the retinoblastoma tumour-suppressor pocket domain bound to a peptide from HPV E7.

Lee, J.O., Russo, A.A., Pavletich, N.P.

(1998) Nature 391: 859-865

• PubMed: 9495340 
• DOI: 10.1038/36038
• Primary Citation of Related Structures:  
  1GUX


• PubMed Abstract: 
  

The pocket domain of the retinoblastoma (Rb) tumour suppressor is central to Rb function, and is frequently inactivated by the binding of the human papilloma virus E7 oncoprotein in cervical cancer. The crystal structure of the Rb pocket bound to a nine-residue E7 peptide containing the LxCxE motif, shared by other Rb-binding viral and cellular proteins, shows that the LxCxE peptide binds a highly conserved groove on the B-box portion of the pocket; the A-box portion appears to be required for the stable folding of the B box. Also highly conserved is the extensive A-B interface, suggesting that it may be an additional protein-binding site. The A and B boxes each contain the cyclin-fold structural motif, with the LxCxE-binding site on the B-box cyclin fold being similar to a Cdk2-binding site of cyclin A and to a TBP-binding site of TFIIB.

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Organizational Affiliation: 

Howard Hughes Medical Institute, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RETINOBLASTOMA PROTEIN	A	218	Homo sapiens	Mutation(s): 0  Gene Names: RB1
Find proteins for P06400 (Homo sapiens) Explore P06400  Go to UniProtKB:  P06400
NIH Common Fund Data Resources
PHAROS  P06400 GTEx  ENSG00000139687

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
RETINOBLASTOMA PROTEIN	B	152	Homo sapiens	Mutation(s): 0  Gene Names: RB1
Find proteins for P06400 (Homo sapiens) Explore P06400  Go to UniProtKB:  P06400
NIH Common Fund Data Resources
PHAROS  P06400 GTEx  ENSG00000139687

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
ONCOPROTEIN	E	9	Human papillomavirus	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.289 
• R-Value Work: 0.218 
• R-Value Observed: 0.218 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 103.5	α = 90
b = 76.8	β = 90.9
c = 64	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-11-15 
• Released Date: 1998-12-02 
Deposition Author(s): Lee, J.O., Russo, A.A., Pavletich, N.P.

Revision History 

• Version 1.0: 1998-12-02
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance