Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A3B2 

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

Macromolecule Content

• Total Structure Weight: 85243.77 
• Atom Count: 5785 
• Residue Count: 724 
• Unique protein chains: 2

2R7G

Structure of the retinoblastoma protein pocket domain in complex with adenovirus E1A CR1 domain

• DOI: 10.2210/pdb2R7G/pdb

• Classification: TRANSCRIPTION REPRESSOR CELL CYCLE
• Organism(s): Homo sapiens, Human adenovirus C serotype 5
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2007-09-07 Released: 2007-10-02 
• Deposition Author(s): Liu, X., Marmorstein, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.671 Å
• R-Value Free: 0.218 
• R-Value Work: 0.195 

Literature

Structure of the retinoblastoma protein bound to adenovirus E1A reveals the molecular basis for viral oncoprotein inactivation of a tumor suppressor

Liu, X., Marmorstein, R.

(2007) Genes Dev. 21: 2711-2716

• PubMed: 17974914 
• DOI: 10.1101/gad.1590607


• PubMed Abstract: 
  

The adenovirus (Ad) E1A (Ad-E1A) oncoprotein mediates cell transformation, in part, by displacing E2F transcription factors from the retinoblastoma protein (pRb) tumor suppressor. In this study we determined the crystal structure of the pRb pocket domain in complex with conserved region 1 (CR1) of Ad5-E1A. The structure and accompanying biochemical studies reveal that E1A-CR1 binds at the interface of the A and B cyclin folds of the pRb pocket domain, and that both E1A-CR1 and the E2F transactivation domain use similar conserved nonpolar residues to engage overlapping sites on pRb, implicating a novel molecular mechanism for pRb inactivation by a viral oncoprotein.

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Organizational Affiliation: 

Program in Gene Expression and Regulation, The Wistar Institute, Philadelphia, Pennsylvania 19104, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Retinoblastoma-associated protein	A, C	347	Homo sapiens	Mutation(s): 0  Gene Names: RB1
Find proteins for P06400 (Homo sapiens) Go to Gene View: RB1 Go to UniProtKB:  P06400

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Early E1A 32 kDa protein	B, D, E	10	Human adenovirus C serotype 5	Mutation(s): 0
Find proteins for P03255 (Human adenovirus C serotype 5) Go to UniProtKB:  P03255

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SO4	A, C	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.671 Å
• R-Value Free: 0.218 
• R-Value Work: 0.195 
• Space Group: P 1

Unit Cell:

Length (Å)	Angle (°)
a = 57.713	α = 94.34
b = 57.706	β = 92.69
c = 92.268	γ = 105.79

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
DENZO	data reduction
HKL-2000	data collection

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-09-07 
• Released Date: 2007-10-02 
• Deposition Author(s): Liu, X., Marmorstein, R.

Revision History 

• Version 1.0: 2007-10-02
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Advisory, Version format compliance
• Version 1.2: 2017-07-26
  Type: Refinement description, Source and taxonomy
• Version 1.3: 2017-10-25
  Type: Refinement description