2GKG

Receiver domain from Myxococcus xanthus social motility protein FrzS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1 Å
  • R-Value Free: 0.123 
  • R-Value Work: 0.092 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

An atypical receiver domain controls the dynamic polar localization of the Myxococcus xanthus social motility protein FrzS.

Fraser, J.S.Merlie, J.P.Echols, N.Weisfield, S.R.Mignot, T.Wemmer, D.E.Zusman, D.R.Alber, T.

(2007) Mol.Microbiol. 65: 319-332

  • DOI: 10.1111/j.1365-2958.2007.05785.x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Myxococcus xanthus FrzS protein transits from pole-to-pole within the cell, accumulating at the pole that defines the direction of movement in social (S) motility. Here we show using atomic-resolution crystallography and NMR that the FrzS receive ...

    The Myxococcus xanthus FrzS protein transits from pole-to-pole within the cell, accumulating at the pole that defines the direction of movement in social (S) motility. Here we show using atomic-resolution crystallography and NMR that the FrzS receiver domain (RD) displays the conserved switch Tyr102 in an unusual conformation, lacks the conserved Asp phosphorylation site, and fails to bind Mg(2+) or the phosphoryl analogue, Mg(2+) x BeF(3). Mutation of Asp55, closest to the canonical site of RD phosphorylation, showed no motility phenotype in vivo, demonstrating that phosphorylation at this site is not necessary for domain function. In contrast, the Tyr102Ala and His92Phe substitutions on the canonical output face of the FrzS RD abolished S-motility in vivo. Single-cell fluorescence microscopy measurements revealed a striking mislocalization of these mutant FrzS proteins to the trailing cell pole in vivo. The crystal structures of the mutants suggested that the observed conformation of Tyr102 in the wild-type FrzS RD is not sufficient for function. These results support the model that FrzS contains a novel 'pseudo-receiver domain' whose function requires recognition of the RD output face but not Asp phosphorylation.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3320, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
response regulator homolog
A
127Myxococcus xanthusMutation(s): 0 
Gene Names: frzS
Find proteins for O68522 (Myxococcus xanthus)
Go to UniProtKB:  O68522
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1 Å
  • R-Value Free: 0.123 
  • R-Value Work: 0.092 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 64.360α = 90.00
b = 64.360β = 90.00
c = 46.038γ = 120.00
Software Package:
Software NamePurpose
Blu-Icedata collection
SHELXL-97refinement
HKL-2000data reduction
HKL-2000data collection
EPMRphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-13
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance