1B4A

STRUCTURE OF THE ARGININE REPRESSOR FROM BACILLUS STEAROTHERMOPHILUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 2.1 of the entry. See complete history


Literature

Structure of the arginine repressor from Bacillus stearothermophilus.

Ni, J.Sakanyan, V.Charlier, D.Glansdorff, N.Van Duyne, G.D.

(1999) Nat Struct Biol 6: 427-432

  • DOI: https://doi.org/10.1038/8229
  • Primary Citation of Related Structures:  
    1B4A, 1B4B

  • PubMed Abstract: 

    The arginine repressor (ArgR) is a hexameric DNA-binding protein that plays a multifunctional role in the bacterial cell. Here, we present the 2.5 A structure of apo-ArgR from Bacillus stearothermophilus and the 2.2 A structure of the hexameric ArgR oligomerization domain with bound arginine. This first view of intact ArgR reveals an approximately 32-symmetric hexamer of identical subunits, with six DNA-binding domains surrounding a central oligomeric core. The difference in quaternary organization of subunits in the arginine-bound and apo forms provides a possible explanation for poor operator binding by apo-ArgR and for high affinity binding in the presence of arginine.


  • Organizational Affiliation

    Department of Biochemistry & Biophysics and Johnson Research Foundation, University of Pennsylvania School of Medicine, Philadelphia 19104, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ARGININE REPRESSOR
A, B, C, D, E
A, B, C, D, E, F
149Geobacillus stearothermophilusMutation(s): 0 
UniProt
Find proteins for O31408 (Geobacillus stearothermophilus)
Explore O31408 
Go to UniProtKB:  O31408
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO31408
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.8α = 90
b = 121.9β = 90
c = 227.4γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
MOSFLMdata reduction
CCP4data scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-06-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2011-11-16
    Changes: Atomic model
  • Version 2.0: 2023-08-02
    Changes: Atomic model, Database references, Other, Refinement description
  • Version 2.1: 2024-05-22
    Changes: Advisory, Data collection, Derived calculations