1DJ8

CRYSTAL STRUCTURE OF E. COLI PERIPLASMIC PROTEIN HDEA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

HDEA, a periplasmic protein that supports acid resistance in pathogenic enteric bacteria.

Gajiwala, K.S.Burley, S.K.

(2000) J.Mol.Biol. 295: 605-612

  • DOI: 10.1006/jmbi.1999.3347

  • PubMed Abstract: 
  • The X-ray crystal structure of the Escherichia coli stress response protein HDEA has been determined at 2.0 A resolution. The single domain alpha-helical protein is found in the periplasmic space, where it supports an acid resistance phenotype essent ...

    The X-ray crystal structure of the Escherichia coli stress response protein HDEA has been determined at 2.0 A resolution. The single domain alpha-helical protein is found in the periplasmic space, where it supports an acid resistance phenotype essential for infectivity of enteric bacterial pathogens, such as Shigella and E. coli. Functional studies demonstrate that HDEA is activated by a dimer-to-monomer transition at acidic pH, leading to suppression of aggregation by acid-denatured proteins. We suggest that HDEA may support chaperone-like functions during the extremely acidic conditions.


    Related Citations: 
    • Identification of Sigma S-Dependent Genes Associated with the Stationary-Phase Acid-Resistance Phenotype of Shigella flexneri
      Waterman, S.R.,Small, P.L.
      (1996) Mol.Microbiol. 21: 925
    • H-NS: a Modulator of Environmentally Regulated Gene Expression
      Atlung, T.,Ingmer, H.
      (1997) Mol.Microbiol. 24: 7
    • Crystal Structure of Escherichia coli HdeA
      Yang, F.,Gustafson, K.R.,Boyd, M.R.,Wlodawer, A.
      (1998) Nat.Struct.Mol.Biol. 5: 763
    • Evidence for GroES Acting as Transcriptional Regulator
      Legname, G.,Buono, P.,Fossati, G.,Monzini, N.,Mascagni, P.,Modena, D.,Marcucci, F.
      (1996) Biochem.Biophys.Res.Commun. 229: 412
    • Comparing the Predicted and Observed Properties of Proteins Encoded in the Genome of Escherichia coli K-12
      Link, A.J.,Robinson, K.,Church, G.H.
      (1997) Electrophoresis 18: 1259


    Organizational Affiliation

    Laboratorie of Molecular Biophysics, Howard Hughes Medical Institute, New York, 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN HNS-DEPENDENT EXPRESSION A
A, B, C, D, E, F
89Escherichia coli (strain K12)Gene Names: hdeA (yhhC, yhiB)
Find proteins for P0AES9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AES9
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.209 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.000α = 90.00
b = 73.600β = 96.80
c = 74.300γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-12-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance