Ejectosome (original) (raw)
An ejectosome is a cellular organelle responsible for ejecting their contents from the cell. Two unrelated types of ejectosomes are described in the literature: 1. * Cryptomonads have two types of characteristic ejectosomes known as extrusomes. 2. * Intracellular pathogens, such as Mycobacterium tuberculosis, escape from their host cells using an actin-based structure, also called an ejectosome.
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| dbo:abstract | An ejectosome is a cellular organelle responsible for ejecting their contents from the cell. Two unrelated types of ejectosomes are described in the literature: 1. * Cryptomonads have two types of characteristic ejectosomes known as extrusomes. 2. * Intracellular pathogens, such as Mycobacterium tuberculosis, escape from their host cells using an actin-based structure, also called an ejectosome. Cryptomonad ejectosomes contain two connected spiral ribbon-like structures, held under tension. If the cells are irritated either by mechanical, chemical or light stress, they discharge, propelling the cell in a zig-zag course away from the disturbance. Large ejectisomes, visible under the light microscope, are associated with the pocket; smaller ones occur elsewhere on the cell. Mycobacteria are ejected from host cells through the action of an actin-based ejectosome. This escape mechanism requires a cytoskeleton regulator from the host plus an intact mycobacterial ESX-1 secretion system. Ejectosomes apparently exert a contractile force, forming a tight septum around the bacteria. Ejection of the bacteria occurs without host cell lysis. (en) |
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| dbo:wikiPageWikiLink | dbr:Cytoskeleton dbr:Cryptomonad dbr:Pathogen dbr:Actin dbr:Extrusomes dbr:Intracellular dbc:Organelles dbr:Organelle dbr:Secretion dbr:Mycobacterium_tuberculosis dbr:Cell_lysis |
| dbp:wikiPageUsesTemplate | dbt:Organelles |
| dcterms:subject | dbc:Organelles |
| gold:hypernym | dbr:Organelle |
| rdf:type | yago:WikicatOrganelles yago:BodyPart105220461 yago:Organ105297523 yago:Organelle105445668 yago:Part109385911 yago:PhysicalEntity100001930 dbo:Protein yago:Thing100002452 |
| rdfs:comment | An ejectosome is a cellular organelle responsible for ejecting their contents from the cell. Two unrelated types of ejectosomes are described in the literature: 1. * Cryptomonads have two types of characteristic ejectosomes known as extrusomes. 2. * Intracellular pathogens, such as Mycobacterium tuberculosis, escape from their host cells using an actin-based structure, also called an ejectosome. (en) |
| rdfs:label | Ejectosome (en) |
| owl:sameAs | freebase:Ejectosome yago-res:Ejectosome wikidata:Ejectosome dbpedia-gl:Ejectosome https://global.dbpedia.org/id/4jfUH |
| prov:wasDerivedFrom | wikipedia-en:Ejectosome?oldid=916574914&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:Ejectosome |
| is dbo:wikiPageRedirects of | dbr:Ejectosomes |
| is dbo:wikiPageWikiLink of | dbr:Cryptomonad dbr:Cryptophyceae dbr:Eukaryote dbr:Organelle dbr:Thaumatomastix dbr:Ejectosomes |
| is foaf:primaryTopic of | wikipedia-en:Ejectosome |