4YN8

Crystal Structure of Response Regulator ChrA in Heme-Sensing Two Component System


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


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Literature

Structure of the response regulator ChrA in the haem-sensing two-component system of Corynebacterium diphtheriae.

Doi, A.Nakamura, H.Shiro, Y.Sugimoto, H.

(2015) Acta Crystallogr.,Sect.F 71: 966-971

  • DOI: 10.1107/S2053230X15009838

  • PubMed Abstract: 
  • ChrA is a response regulator (RR) in the two-component system involved in regulating the degradation and transport of haem (Fe-porphyrin) in the pathogen Corynebacterium diphtheriae. Here, the crystal structure of full-length ChrA is described at a r ...

    ChrA is a response regulator (RR) in the two-component system involved in regulating the degradation and transport of haem (Fe-porphyrin) in the pathogen Corynebacterium diphtheriae. Here, the crystal structure of full-length ChrA is described at a resolution of 1.8 Å. ChrA consists of an N-terminal regulatory domain, a long linker region and a C-terminal DNA-binding domain. A structural comparison of ChrA with other RRs revealed substantial differences in the relative orientation of the two domains and the conformation of the linker region. The structural flexibility of the linker could be an important feature in rearrangement of the domain orientation to create a dimerization interface to bind DNA during haem-sensing signal transduction.


    Related Citations: 
    • Heme-dependent autophosphorylation of a heme sensor kinase, ChrS, from Corynebacterium diphtheriae reconstituted in proteoliposomes.
      Ito, Y.,Nakagawa, S.,Komagata, A.,Ikeda-Saito, M.,Shiro, Y.,Nakamura, H.
      (2009) FEBS Lett. 583: 2244


    Organizational Affiliation

    RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Response regulator ChrA
A
203Corynebacterium diphtheriaeMutation(s): 1 
Gene Names: chrA
Find proteins for Q9RPE9 (Corynebacterium diphtheriae)
Go to UniProtKB:  Q9RPE9
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.176 
  • Space Group: I 41 2 2
Unit Cell:
Length (Å)Angle (°)
a = 84.880α = 90.00
b = 84.880β = 90.00
c = 169.300γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
Cootmodel building
BALBESphasing
HKL-2000data scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
KAKENHIJapan24687015
KAKENHIJapan25121739
KAKENHIJapan23121531

Revision History 

  • Version 1.0: 2015-08-19
    Type: Initial release