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
- PubMed: 10623550
- DOI: 10.1006/jmbi.1999.3347
- PubMed Abstract:
- 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
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.
Laboratorie of Molecular Biophysics, Howard Hughes Medical Institute, New York, 10021, USA.