4QWQ

Crystal structure of the DNA-binding domain of the response regulator SaeR from Staphylococcus aureus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.209 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structure of the DNA-binding domain of the response regulator SaeR from Staphylococcus aureus.

Fan, X.Zhang, X.Zhu, Y.Niu, L.Teng, M.Sun, B.Li, X.

(2015) Acta Crystallogr D Biol Crystallogr 71: 1768-1776

  • DOI: 10.1107/S1399004715010287
  • Primary Citation of Related Structures:  
    4QWQ

  • PubMed Abstract: 
  • The SaeR/S two-component regulatory system is essential for controlling the expression of many virulence factors in Staphylococcus aureus. SaeR, a member of the OmpR/PhoB family, is a response regulator with an N-terminal regulatory domain and a C-terminal DNA-binding domain ...

    The SaeR/S two-component regulatory system is essential for controlling the expression of many virulence factors in Staphylococcus aureus. SaeR, a member of the OmpR/PhoB family, is a response regulator with an N-terminal regulatory domain and a C-terminal DNA-binding domain. In order to elucidate how SaeR binds to the promoter regions of target genes, the crystal structure of the DNA-binding domain of SaeR (SaeR(DBD)) was solved at 2.5 Å resolution. The structure reveals that SaeR(DBD) exists as a monomer and has the canonical winged helix-turn-helix module. EMSA experiments suggested that full-length SaeR can bind to the P1 promoter and that the binding affinity is higher than that of its C-terminal DNA-binding domain. Five key residues on the winged helix-turn-helix module were verified to be important for binding to the P1 promoter in vitro and for the physiological function of SaeR in vivo.


    Organizational Affiliation

    Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Response regulator SaeR AB110Staphylococcus aureusMutation(s): 0 
Gene Names: saeRCH52_02235X998_0755
Find proteins for Q2G2G2 (Staphylococcus aureus (strain NCTC 8325 / PS 47))
Explore Q2G2G2 
Go to UniProtKB:  Q2G2G2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.209 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 31.974α = 90
b = 62.648β = 90
c = 116.262γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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