About: Aerolysin

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In molecular biology, aerolysin is a cytolytic pore-forming toxin exported by Aeromonas hydrophila, a Gram-negative bacterium associated with diarrhoeal diseases and deep wound infections. 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. Images of an aerolysin oligomer derived from electron microscopy have helped to construct a model of the protein in its heptameric conformation, and to outline a mechanism by which this assembly might insert into lipid bilayers to form ion channels.

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dbo:abstract
  • In molecular biology, aerolysin is a cytolytic pore-forming toxin exported by Aeromonas hydrophila, a Gram-negative bacterium associated with diarrhoeal diseases and deep wound infections. 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. Images of an aerolysin oligomer derived from electron microscopy have helped to construct a model of the protein in its heptameric conformation, and to outline a mechanism by which this assembly might insert into lipid bilayers to form ion channels. (en)
  • エロリジン(Aerolysin)とは、ヒトの下痢腸炎起病性の食中毒細菌かつ魚類の菌であるエロモナス・ハイドロフィラ(Aeromonas hydrophila)によって分泌される膜孔形成毒素の溶血素である。この病原菌は2種類の溶血素(α、β)を産生することが知られているが、このうちβ溶血素がエロリジンと呼ばれる。成熟したエロリジンは真核細胞の細胞膜に結合し、7個の単量体が集合して環状の七量体となり、細胞膜上に直径約3 nmの孔を形成する。この結果、本来は細胞膜を通過しない物が通過するようになるために、エロリジンに耐性のない細胞は打撃を受ける。エロリジン七量体の電子顕微鏡での観察結果は、膜孔形成細胞溶解素が自分自身を脂質二重層に挿入してイオンチャネルを形成するメカニズムを解明する助けとなった。 (ja)
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  • Aerolysin
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  • proaerolysin (en)
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  • IPR005830 (en)
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  • Aerolysin (en)
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  • 35 (xsd:integer)
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  • 5 (xsd:integer)
dbp:pfam
  • PF01117 (en)
dbp:pfamClan
  • CL0345 (en)
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  • PDOC00247 (en)
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  • Aerolysin (en)
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  • In molecular biology, aerolysin is a cytolytic pore-forming toxin exported by Aeromonas hydrophila, a Gram-negative bacterium associated with diarrhoeal diseases and deep wound infections. 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. Images of an aerolysin oligomer derived from electron microscopy have helped to construct a model of the protein in its heptameric conformation, and to outline a mechanism by which this assembly might insert into lipid bilayers to form ion channels. (en)
  • エロリジン(Aerolysin)とは、ヒトの下痢腸炎起病性の食中毒細菌かつ魚類の菌であるエロモナス・ハイドロフィラ(Aeromonas hydrophila)によって分泌される膜孔形成毒素の溶血素である。この病原菌は2種類の溶血素(α、β)を産生することが知られているが、このうちβ溶血素がエロリジンと呼ばれる。成熟したエロリジンは真核細胞の細胞膜に結合し、7個の単量体が集合して環状の七量体となり、細胞膜上に直径約3 nmの孔を形成する。この結果、本来は細胞膜を通過しない物が通過するようになるために、エロリジンに耐性のない細胞は打撃を受ける。エロリジン七量体の電子顕微鏡での観察結果は、膜孔形成細胞溶解素が自分自身を脂質二重層に挿入してイオンチャネルを形成するメカニズムを解明する助けとなった。 (ja)
rdfs:label
  • Aerolysin (en)
  • エロリジン (ja)
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