1K6Z

Crystal Structure of the Yersinia Secretion Chaperone SycE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.194 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Three-dimensional structure of the type III secretion chaperone SycE from Yersinia pestis.

Evdokimov, A.G.Tropea, J.E.Routzahn, K.M.Waugh, D.S.

(2002) Acta Crystallogr.,Sect.D 58: 398-406


  • PubMed Abstract: 
  • Many bacterial pathogens utilize a type III (contact-dependent) secretion system to inject cytotoxic effector proteins directly into host cells. This ingenious mechanism, designed for both bacterial offense and defense, has been studied most extensiv ...

    Many bacterial pathogens utilize a type III (contact-dependent) secretion system to inject cytotoxic effector proteins directly into host cells. This ingenious mechanism, designed for both bacterial offense and defense, has been studied most extensively in Yersinia spp. To be exported efficiently, at least three of the effectors (YopE, YopH and YopT) and several other proteins that transit the type III secretion pathway in Yersinia (YopN, YopD and YopB) must first form transient complexes with cognate-specific Yop chaperone (Syc) proteins. The cytotoxic effector YopE, a selective activator of mammalian Rho-family GTPases, associates with SycE. Here, the structure of Y. pestis SycE at 1.95A resolution is reported. SycE possesses a novel fold with an unusual dimerization motif and an intriguing basic cavity located on the dyad axis of the dimer that may participate in its interaction with YopE.


    Organizational Affiliation

    Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, PO Box B, Frederick, MD 21702-1201, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Type III secretion chaperone SycE
A, B
141Yersinia pestisGene Names: yerA
Find proteins for P31491 (Yersinia pestis)
Go to UniProtKB:  P31491
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IMD
Query on IMD

Download SDF File 
Download CCD File 
A, B
IMIDAZOLE
C3 H5 N2
RAXXELZNTBOGNW-UHFFFAOYSA-O
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.194 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 51.879α = 90.00
b = 56.038β = 114.04
c = 54.993γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
DENZOdata reduction
SHELXL-97refinement
SHELXDphasing
SCALEPACKdata scaling
SHELXD/SHARPmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-10-31
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance