Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 21335.74 
• Atom Count: 1491 
• Residue Count: 185 
• Unique protein chains: 1

1AD6

DOMAIN A OF HUMAN RETINOBLASTOMA TUMOR SUPPRESSOR

• DOI: 10.2210/pdb1AD6/pdb

• Classification: TRANSCRIPTION REGULATION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 1997-02-21 Released: 1998-08-26 
• Deposition Author(s): Kim, H.Y., Cho, Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.240 
• R-Value Work: 0.201 

Literature

Structural similarity between the pocket region of retinoblastoma tumour suppressor and the cyclin-box.

Kim, H.Y., Cho, Y.

(1997) Nat.Struct.Mol.Biol. 4: 390-395

• PubMed: 9145110 


• PubMed Abstract: 
  

The pocket region of retinoblastoma tumour suppressor (Rb) is essential for tumour suppressing activity. The Rb pocket is primarily composed of two domains, A and B. We have determined the X-ray crystal structure of domain A (residues 378-562) at 2.3 A resolution. Domain A consists of nine alpha-helices. The overall arrangement of helices in domain A is remarkably similar to the cyclin-box folds found in the crystal structures of cyclin A and TFIIB. This structure, along with domain B which is predicted to be homologous to the cyclin-box, suggests that the Rb pocket is composed of two cyclin-box fold domains. We present the structural/functional features of the Rb pocket, and the potential binding region for cellular or viral proteins within domain A.

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Organizational Affiliation: 

Structural Biology Center, Korea Institute of Science and Technology, Cheongryang, Seoul, South Korea.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
RETINOBLASTOMA TUMOR SUPPRESSOR	A	185	Homo sapiens	Mutation(s): 0  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: 2.3 Å
• R-Value Free: 0.240 
• R-Value Work: 0.201 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 38.600	α = 90.00
b = 68.040	β = 90.00
c = 80.830	γ = 90.00

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
TNT	refinement
MLPHARE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-02-21 
• Released Date: 1998-08-26 
• Deposition Author(s): Kim, H.Y., Cho, Y.

Revision History 

• Version 1.0: 1998-08-26
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance