Crystal structure of the Arginine Repressor from the pathogenic bacterium Corynebacterium pseudotuberculosis

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 

Starting Model: experimental
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Tyrosine binding and promiscuity in the arginine repressor from the pathogenic bacterium Corynebacterium pseudotuberculosis.

Mariutti, R.B.Ullah, A.Araujo, G.C.Murakami, M.T.Arni, R.K.

(2016) Biochem Biophys Res Commun 475: 350-355

  • DOI: https://doi.org/10.1016/j.bbrc.2016.05.091
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The arginine repressor (ArgR) regulates arginine biosynthesis in a number of microorganisms and consists of two domains interlinked by a short peptide; the N-terminal domain is involved in DNA binding and the C-terminal domain binds arginine and forms a hexamer made-up of a dimer of trimers. The crystal structure of the C-terminal domain of ArgR from the pathogenic Corynebacterium pseudotuberculosis determined at 1.9 Å resolution contains a tightly bound tyrosine at the arginine-binding site indicating hitherto unobserved promiscuity. Structural analysis of the binding pocket displays clear molecular adaptations to accommodate tyrosine binding suggesting the possible existence of an alternative regulatory process in this pathogenic bacterium.

  • Organizational Affiliation

    Multiuser Center for Biomolecular Innovation, IBILCE/UNESP, São José do Rio Preto, SP, 15054-000, Brazil. Electronic address: mariutti@ibilce.unesp.br.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Arginine repressor
A, B
97Corynebacterium pseudotuberculosisMutation(s): 0 
Gene Names: argRCpE19_0967
Find proteins for D9QA55 (Corynebacterium pseudotuberculosis (strain C231))
Explore D9QA55 
Go to UniProtKB:  D9QA55
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD9QA55
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.182 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.191α = 90
b = 83.191β = 90
c = 83.191γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-08-31
    Type: Initial release
  • Version 1.1: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Refinement description