2YO2

Salmonella enterica SadA 255-358 fused to GCN4 adaptors (SadAK12)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Complete Fiber Structures of Complex Trimeric Autotransporter Adhesins Conserved in Enterobacteria.

Hartmann, M.D.Grin, I.Dunin-Horkawicz, S.Deiss, S.Linke, D.Lupas, A.N.Hernandez Alvarez, B.

(2012) Proc.Natl.Acad.Sci.USA 109: 20907

  • DOI: 10.1073/pnas.1211872110
  • Primary Citation of Related Structures:  
  • Also Cited By: 3ZMF

  • PubMed Abstract: 
  • Trimeric autotransporter adhesins (TAAs) are modular, highly repetitive surface proteins that mediate adhesion to host cells in a broad range of Gram-negative pathogens. Although their sizes may differ by more than one order of magnitude, they all fo ...

    Trimeric autotransporter adhesins (TAAs) are modular, highly repetitive surface proteins that mediate adhesion to host cells in a broad range of Gram-negative pathogens. Although their sizes may differ by more than one order of magnitude, they all follow the same basic head-stalk-anchor architecture, where the head mediates adhesion and autoagglutination, the stalk projects the head from the bacterial surface, and the anchor provides the export function and attaches the adhesin to the bacterial outer membrane after export is complete. In complex adhesins, head and stalk domains may alternate several times before the anchor is reached. Despite extensive sequence divergence, the structures of TAA domains are highly constrained, due to the tight interleaving of their constituent polypeptide chains. We have therefore taken a "domain dictionary" approach to characterize representatives for each domain type by X-ray crystallography and use these structures to reconstruct complete TAA fibers. With SadA from Salmonella enterica, EhaG from enteropathogenic Escherichia coli (EHEC), and UpaG from uropathogenic E. coli (UPEC), we present three representative structures of a complex adhesin that occur in a conserved genomic context in Enterobacteria and is essential in the infection process of uropathogenic E. coli. Our work proves the applicability of the dictionary approach to understanding the structure of a class of proteins that are otherwise poorly tractable by high-resolution methods and provides a basis for the rapid and detailed annotation of newly identified TAAs.


    Organizational Affiliation

    Department of Protein Evolution, Max Planck Institute for Developmental Biology, 72076 Tübingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GENERAL CONTROL PROTEIN GCN4, PUTATIVE INNER MEMBRANE PROTEIN
A
170Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
This entity is chimeric
Mutation(s): 16 
Gene Names: sadA, GCN4 (AAS3, ARG9)
Find proteins for Q8ZL64 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  Q8ZL64
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P03069
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.242 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 48.630α = 90.00
b = 48.630β = 90.00
c = 366.000γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
MOLREPphasing
XSCALEdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-12-12
    Type: Initial release
  • Version 1.1: 2013-01-09
    Type: Database references
  • Version 1.2: 2013-04-17
    Type: Refinement description
  • Version 1.3: 2017-03-15
    Type: Source and taxonomy