Nonenveloped viruses - PowerPoint PPT Presentation

Picornaviruses

Picornaviruses. Genera of the family Picornaviridae. Enterovirus Parechovirus Rhinovirus Hepatovirus Aphtovirus Cardiovirus. Structure of virion. Ss +RNA. Virion is icosahedral 22- 30nm in diameter. Capsid has 60 copies of 4 proteins:

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OPTO435 Microbiology II Gamal El-Hiti

OPTO435 Microbiology II Gamal El-Hiti. Nonenveloped DNA Viruses Lecture Nine. Learning Outcomes. Viral Infections. Nonenveloped DNA Viruses. Nonenveloped DNA Viruses.  Adenoviruses are members of the family Adenoviridae .  They are medium sized viruses (80–90 nm).

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Virus Entry

Virus Entry. Steps in virus entry. Penetration through cellular membranes. Intracellular transport. Steps in virus entry. How do virions get into eukaryotic cells? Enveloped and nonenveloped viruses have distinct penetration strategies Some viruses can pass directly from cell to cell.

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