Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 29286.30 
• Atom Count: 2040 
• Residue Count: 244 
• Unique protein chains: 1

1REG

CRYSTAL STRUCTURE OF THE T4 REGA TRANSLATIONAL REGULATOR PROTEIN AT 1.9 ANGSTROMS RESOLUTION

• DOI: 10.2210/pdb1REG/pdb

• Classification: TRANSLATIONAL REGULATOR PROTEIN
• Organism(s): Enterobacteria phage T4


• Deposited: 1995-01-11 Released: 1996-01-01 
• Deposition Author(s): Kang, C., Rich, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.214 
• R-Value Work: 0.180 

Literature

Crystal structure of the T4 regA translational regulator protein at 1.9 A resolution.

Kang, C., Chan, R., Berger, I., Lockshin, C., Green, L., Gold, L., Rich, A.

(1995) Science 268: 1170-1173

• PubMed: 7761833 


• PubMed Abstract: 
  

The translational regulator protein regA is encoded by the T4 bacteriophage and binds to a region of messenger RNA (mRNA) that includes the initiator codon. RegA is unusual in that it represses the translation of about 35 early T4 mRNAs but does not affect nearly 200 other mRNAs. The crystal structure of regA was determined at 1.9 A resolution; the protein was shown to have an alpha-helical core and two regions with antiparallel beta sheets. One of these beta sheets has four antiparallel strands and has some sequence homology to RNP-1 and RNP-2, which are believed to be RNA-binding motifs and are found in a number of known RNA-binding proteins. Structurally guided mutants may help to uncover the basis for this variety of RNA interaction.

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Organizational Affiliation: 

Department of Biology, Massachusetts Institute of Technology, Cambridge 02139, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
T4 REGA	X, Y	122	Enterobacteria phage T4	Mutation(s): 0  Gene Names: regA
Find proteins for P69702 (Enterobacteria phage T4) Go to UniProtKB:  P69702

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.214 
• R-Value Work: 0.180 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 82.708	α = 90.00
b = 85.725	β = 90.00
c = 43.485	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	refinement
X-PLOR	model building
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1995-01-11 
• Released Date: 1996-01-01 
• Deposition Author(s): Kang, C., Rich, A.

Revision History 

• Version 1.0: 1996-01-01
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance