1JYA

Crystal Structure of SycE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.74 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the Yersinia type III secretory system chaperone SycE.

Birtalan, S.Ghosh, P.

(2001) Nat.Struct.Mol.Biol. 8: 974-978

  • DOI: 10.1038/nsb1101-974

  • PubMed Abstract: 
  • In the type III secretory system of bacterial pathogens, a large number of sequence-divergent but characteristically small (approximately 14-19 kDa), acidic (pI approximately 4-5) chaperone proteins have been identified. We present the 1.74 A resolut ...

    In the type III secretory system of bacterial pathogens, a large number of sequence-divergent but characteristically small (approximately 14-19 kDa), acidic (pI approximately 4-5) chaperone proteins have been identified. We present the 1.74 A resolution crystal structure of the Yersinia pseudotuberculosis chaperone SycE, whose action in promoting translocation of YopE into host macrophages is essential to Yersinia pathogenesis. SycE, a compact, globular dimer with a novel fold, has two large hydrophobic surface patches that may form binding sites for YopE or other type III components. These patches are formed by structurally key residues that are conserved among many chaperones, suggesting shared structural and functional relationships. A negative electrostatic potential covers almost the entire surface of SycE and is likely conserved in character, but not in detail, among chaperones. The structure provides the first structural insights into possible modes of action of SycE and type III chaperones in general.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California at San Diego, La Jolla, California 92093-0314, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
YOPE regulator
A, B
130Yersinia pseudotuberculosis serotype I (strain IP32953)N/A
Find proteins for Q663P0 (Yersinia pseudotuberculosis serotype I (strain IP32953))
Go to UniProtKB:  Q663P0
Small Molecules
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: 1.74 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.236 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 46.000α = 90.00
b = 75.190β = 90.00
c = 137.740γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
SOLVEphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

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
  • Version 1.3: 2018-01-31
    Type: Advisory, Experimental preparation