Prion meaning

prīŏn, prē-
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A protein particle that is the agent of infection in a variety of neurodegenerative diseases, including bovine spongiform encephalopathy, Creutzfeldt-Jakob disease, and scrapie. Prions are the only known infectious agents that do not contain DNA or RNA. They derive from a normal body protein that becomes irreversibly misfolded, and they proliferate in the body, possibly by acting as a template for further protein misfolding.
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A protein particle that is the agent of infection in a variety of neurodegenerative diseases, including bovine spongiform encephalopathy, Creutzfeldt-Jakob disease, and scrapie. Prions are the only known infectious agents that do not contain DNA or RNA. They derive from a normal body protein that becomes irreversibly misfolded, and they proliferate in the body, possibly by acting as a template for further protein misfolding.
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Any of a group of tiny infectious agents composed mainly or entirely of protein: though lacking in demonstrable nucleic acid, prions are capable of self-replication and are thought to be the cause of various degenerative diseases of the nervous systems of vertebrates, as scrapie and kuru.
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A protein particle that is the agent of infection in a variety of neurodegenerative diseases, including bovine spongiform encephalopathy, Creutzfeldt-Jakob disease, and scrapie. Prions are the only known infectious agents that do not contain DNA or RNA. They derive from a normal body protein that becomes irreversibly misfolded, and they proliferate in the body, possibly by acting as a template for further protein misfolding.
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A particle of protein that is thought to be able to self-replicate and to be the agent of infection in a variety of diseases of the nervous system, such as mad cow disease. Prion replication (in which strings of amino acids are reproduced) stands as an exception to a central tenet of biology stating that only nucleic acids, such as DNA, can self-replicate. The mechanism of prion replication is not clearly understood.
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(molecular biology) A self-propagating misfolded conformer of a protein that is responsible for a number of diseases that affect the brain and other neural tissue.
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A petrel of the genus Pachyptila.
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Origin of prion

  • Alteration of pro(teinaceous) in(fectious particle)

    From American Heritage Dictionary of the English Language, 5th Edition

  • Alteration of pro(teinaceous) in(fectious particle)

    From American Heritage Dictionary of the English Language, 5th Edition

  • From (a reordering of) the initial letters of proteinaceous infectious particle. Coined in 1982 by Stanley B. Prusiner.

    From Wiktionary

  • From Prion (former genus name), from Ancient Greek πρίων (priōn, “saw").

    From Wiktionary