2XGA

MTSL spin-labelled Shigella Flexneri Spa15


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Shigella Flexneri Spa15 Crystal Structure Verified in Solution by Double Electron Electron Resonance.

Lillington, J.E.D.Lovett, J.E.Johnson, S.Roversi, P.Timmel, C.R.Lea, S.M.

(2011) J.Mol.Biol. 405: 427

  • DOI: 10.1016/j.jmb.2010.10.053

  • PubMed Abstract: 
  • Shigella flexneri Spa15 is a chaperone of the type 3 secretion system, which binds a number of effectors to ensure their stabilization prior to secretion. One of these effectors is IpgB1, a mimic of the human Ras-like Rho guanosine triphosphatase Rho ...

    Shigella flexneri Spa15 is a chaperone of the type 3 secretion system, which binds a number of effectors to ensure their stabilization prior to secretion. One of these effectors is IpgB1, a mimic of the human Ras-like Rho guanosine triphosphatase RhoG. In this study, Spa15 alone and in complex with IpgB1 has been studied by double electron electron resonance, an experiment that gives distance information showing the spacial separation of attached spin labels. This distance is explained by determining the crystal structure of the spin-labeled Spa15 where labels are seen to be buried in hydrophobic pockets. The double electron electron resonance experiment on the Spa15 complex with IpgB1 shows that IpgB1 does not bind Spa15 in the same way as is seen in the homologous Salmonella sp. chaperone:effector complex InvB:SipA.


    Organizational Affiliation

    Inorganic Chemistry Laboratory, University of Oxford, OX1 3QR, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SURFACE PRESENTATION OF ANTIGENS PROTEIN SPAK
A, B
153Shigella flexneriMutation(s): 0 
Gene Names: spaK (spa15)
Find proteins for P35530 (Shigella flexneri)
Go to UniProtKB:  P35530
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MTN
Query on MTN

Download SDF File 
Download CCD File 
A, B
S-[(1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)methyl] methanesulfonothioate
MTSL
C10 H18 N O3 S2
MXZPGYFBZHBAQM-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.224 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 55.980α = 90.00
b = 50.380β = 117.03
c = 57.680γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
MOLREPphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-12-01
    Type: Initial release
  • Version 1.1: 2011-05-12
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance