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Family - Picornaviridae
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2012 (English)In: Virus Taxonomy: Ninth Report of the International Committee on Taxonomy of Viruses / [ed] Andrew M.Q. King, Elliot Lefkowitz, Michael J. Adams and Eric B. Carstens, San Diego - London: Elsevier, 2012, p. 855-881Chapter in book (Refereed)
Abstract [en]

This chapter focuses on Picornaviridae family whose member genuses includeEnterovirus, Cardiovirus, Aphthovirus, Hepatovirus, and Parechovirus. The virions of this family consist of a capsid with no envelope and surrounds a core of ssRNA. Hydrated native particles are 30 nm in diameter, but vary from 22 to 30 nm in electron micrographs due to drying and flattening during preparation. The virions contain one molecule of positive sense, ssRNA, and possess a single long ORF. The UTRs at both termini contain regions of secondary structure, which are essential to genome function. In addition to the major CPs, 1A, 1B, 1C and 1D, and 3B (VPg), small amounts of 1AB (VP0) are commonly seen in lieu of one or more copies of 1A and 1B. Protein 1A is small in hepatoviruses, and 1AB is uncleaved in avihepatoviruses, kobuviruses, parechoviruses, and a number of unclassified picornaviruses. Some picornaviruses carry a sphingosine-like molecule in a cavity located inside 1D, and protein 1A generally has a molecule of myristic acid covalently attached to the amino terminal glycine. The virion RNA is infectious and serves as both the genome and the viral mRNA. Infection is generally cytolytic, but persistent infections are common with some species and reported with others. Poliovirus infected cells undergo extensive vacuolation as membranes are reorganized into viral replication complexes.

Place, publisher, year, edition, pages
San Diego - London: Elsevier, 2012. p. 855-881
National Category
Microbiology
Research subject
Biomedical Sciences, Virology
Identifiers
URN: urn:nbn:se:lnu:diva-16518DOI: 10.1016/B978-0-12-384684-6.00074-4ISBN: 978-0-12-384684-6 (print)OAI: oai:DiVA.org:lnu-16518DiVA, id: diva2:472025
Available from: 2012-01-03 Created: 2012-01-03 Last updated: 2016-10-05Bibliographically approved

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Lindberg, A. Michael

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