1DZ3

DOMAIN-SWAPPING IN THE SPORULATION RESPONSE REGULATOR SPO0A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Domain swapping in the sporulation response regulator Spo0A.

Lewis, R.J.Muchova, K.Brannigan, J.A.Barak, I.Leonard, G.Wilkinson, A.J.

(2000) J. Mol. Biol. 297: 757-770

  • DOI: 10.1006/jmbi.2000.3598

  • PubMed Abstract: 
  • Adaptive responses of micro-organisms, such as chemotaxis and sporulation, are governed by two-component systems consisting of sensor kinases, that interpret environmental signals, and response regulators which activate the appropriate physiological ...

    Adaptive responses of micro-organisms, such as chemotaxis and sporulation, are governed by two-component systems consisting of sensor kinases, that interpret environmental signals, and response regulators which activate the appropriate physiological responses. Signal transduction via response regulator proteins is mediated through transient phosphorylation of aspartic acid residues. In Spo0A, the key regulator of development (sporulation) in Bacillus, phosphorylation of the N-terminal receiver domain (N-Spo0A) at aspartate-55 switches on the transcription activation functions residing in the C-terminal effector domain. Here we report the crystal structure of N-Spo0A from Bacillus stearothermophilus at 1.6 A spacing, revealing a dimer formed by an alpha-helix swap. Comparison of this structure with the recently described structure of phosphorylated N-Spo0A shows that dimer formation results from a cis-trans isomerization of the Lys106--Pro107 peptide bond. The quaternary reorganization is associated with alterations in the active site stereochemistry which may have implications for signalling. Remarkably, this 3-D domain swapped N-Spo0A dimer has an identical topology to a hypothetical CheY-like dimer, recently proposed as an intermediate in the evolution of the family of periplasmic substrate binding proteins.


    Organizational Affiliation

    Structural Biology Laboratory Department of Chemistry, University of York, York, YO10 5DD, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Stage 0 sporulation protein A
A
130Geobacillus stearothermophilusMutation(s): 0 
Gene Names: spo0A
Find proteins for P52934 (Geobacillus stearothermophilus)
Go to UniProtKB:  P52934
Small Molecules
Ligands 1 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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.208 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 59.024α = 90.00
b = 59.024β = 90.00
c = 66.970γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-04-10
    Type: Initial release
  • Version 1.1: 2011-05-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-06-20
    Type: Advisory, Data collection, Database references, Source and taxonomy, Structure summary