4ZVD

Crystal structure of MID domain of the E. coli DosC - form II


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.239 

Starting Model: experimental
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This is version 1.1 of the entry. See complete history


Literature

Structural analysis of an oxygen-regulated diguanylate cyclase.

Tarnawski, M.Barends, T.R.Schlichting, I.

(2015) Acta Crystallogr D Biol Crystallogr 71: 2158-2177

  • DOI: https://doi.org/10.1107/S139900471501545X
  • Primary Citation of Related Structures:  
    4ZVA, 4ZVB, 4ZVC, 4ZVD, 4ZVE, 4ZVF, 4ZVG, 4ZVH

  • PubMed Abstract: 

    Cyclic di-GMP is a bacterial second messenger that is involved in switching between motile and sessile lifestyles. Given the medical importance of biofilm formation, there has been increasing interest in understanding the synthesis and degradation of cyclic di-GMPs and their regulation in various bacterial pathogens. Environmental cues are detected by sensing domains coupled to GGDEF and EAL or HD-GYP domains that have diguanylate cyclase and phosphodiesterase activities, respectively, producing and degrading cyclic di-GMP. The Escherichia coli protein DosC (also known as YddV) consists of an oxygen-sensing domain belonging to the class of globin sensors that is coupled to a C-terminal GGDEF domain via a previously uncharacterized middle domain. DosC is one of the most strongly expressed GGDEF proteins in E. coli, but to date structural information on this and related proteins is scarce. Here, the high-resolution structural characterization of the oxygen-sensing globin domain, the middle domain and the catalytic GGDEF domain in apo and substrate-bound forms is described. The structural changes between the iron(III) and iron(II) forms of the sensor globin domain suggest a mechanism for oxygen-dependent regulation. The structural information on the individual domains is combined into a model of the dimeric DosC holoprotein. These findings have direct implications for the oxygen-dependent regulation of the activity of the cyclase domain.


  • Organizational Affiliation

    Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Jahnstrasse 29, 69120 Heidelberg, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Diguanylate cyclase DosC
A, B
126Escherichia coli K-12Mutation(s): 0 
Gene Names: dosCyddVb1490JW5241
EC: 2.7.7.65
UniProt
Find proteins for P0AA89 (Escherichia coli (strain K12))
Explore P0AA89 
Go to UniProtKB:  P0AA89
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0AA89
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.239 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.93α = 90
b = 51.26β = 90
c = 92.65γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-11-11
    Type: Initial release
  • Version 1.1: 2024-01-10
    Changes: Data collection, Database references, Refinement description