1OPC

OMPR DNA-BINDING DOMAIN, ESCHERICHIA COLI

• PDB DOI: https://doi.org/10.2210/pdb1OPC/pdb

• Classification: TRANSCRIPTION REGULATION
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1996-12-16 Released: 1997-04-01 
• Deposition Author(s): Martinez-Hackert, E., Stock, A.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.269 
• R-Value Work: 0.228 

Literature

The DNA-binding domain of OmpR: crystal structures of a winged helix transcription factor.

Martinez-Hackert, E., Stock, A.M.

(1997) Structure 5: 109-124

• PubMed: 9016718 
• DOI: https://doi.org/10.1016/s0969-2126(97)00170-6
• Primary Citation of Related Structures:  
  1OPC


• PubMed Abstract: 
  

  The differential expression of the ompF and ompC genes is regulated by two proteins that belong to the two component family of signal transduction proteins: the histidine kinase, EnvZ, and the response regulator, OmpR. OmpR belongs to a subfamily of at least 50 response regulators with homologous C-terminal DNA-binding domains of approximately 98 amino acids. Sequence homology with DNA-binding proteins of known structure cannot be detected, and the lack of structural information has prevented understanding of many of this familys functional properties.

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Organizational Affiliation: 

Center for Advanced Biotechnology and Medicine, 679 Hoes Lane, Piscataway, NJ 08854, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 12.54 kDa 
• Atom Count: 890 
• Modelled Residue Count: 99 
• Deposited Residue Count: 110 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
OMPR	A	110	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0AA16 (Escherichia coli (strain K12)) Explore P0AA16  Go to UniProtKB:  P0AA16

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.269 
• R-Value Work: 0.228 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 59.14	α = 90
b = 59.14	β = 90
c = 58.11	γ = 120

Software Package:

Software Name	Purpose
MADSYS	phasing
PROLSQ	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-04-01 
Deposition Author(s): Martinez-Hackert, E., Stock, A.M.

Revision History  

• Version 1.0: 1997-04-01
  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: 2024-02-14
  Changes: Data collection, Database references