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Keyword - Viral long flexible tail ejection system (KW-1243)

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Viral protein that constitutes the noncontractile ejection system carried by some long-tailed prokaryotic viruses such as the Siphoviridae. This ejection system is composed at least of a noncontractile tube and a tail tip which is able to penetrate the host cell envelope to deliver the viral genome, and possibly some specific proteins, into the cell cytoplasm. Proteins of the ejection apparatus can play an active or a structural role in ejection.


  • Viral genome injection via long noncontractile tail


Molecular function

Gene Ontology


viral genome ejection through host cell envelope, long flexible tail mechanism [ GO:0099001 ]


VirionViral genome ejection through host cell envelopeVirus entry into host cellMolecular functionViral penetration into host cytoplasmViral long flexible tail ejection systemCellular componentBiological process
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