Aerolysin

Aerolysin
proaerolysin
Identifiers
Symbol Aerolysin
Pfam PF01117
Pfam clan CL0345
InterPro IPR005830
PROSITE PDOC00247
SCOP 1pre
TCDB 1.C.4

In molecular biology, aerolysin is a cytolytic toxin exported by Aeromonas hydrophila, a Gram-negative bacterium associated with diarrhoeal diseases and deep wound infections.[1][2] The mature toxin binds to eukaryotic cells and aggregates to form holes (approximately 3 nm in diameter) leading to the destruction of the membrane permeability barrier and osmotic lysis. The structure of proaerolysin has been determined to 2.8A resolution and shows the protoxin to adopt a novel fold.[2] Images of an aerolysin oligomer derived from electron microscopy have helped to construct a model of the protein and to outline a mechanism by which it might insert into lipid bilayers to form ion channels.[2]

References

  1. ^ Howard SP, Garland WJ, Green MJ, Buckley JT (June 1987). "Nucleotide sequence of the gene for the hole-forming toxin aerolysin of Aeromonas hydrophila". J. Bacteriol. 169 (6): 2869–71. PMC 212202. PMID 3584074. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=212202. 
  2. ^ a b c Parker MW, Buckley JT, Postma JP, Tucker AD, Leonard K, Pattus F, Tsernoglou D (January 1994). "Structure of the Aeromonas toxin proaerolysin in its water-soluble and membrane-channel states". Nature 367 (6460): 292–5. doi:10.1038/367292a0. PMID 7510043. 

This article incorporates text from the public domain Pfam and InterPro IPR005830