BIO 3124 Lecture Notes - Lecture 13: Rna-Dependent Rna Polymerase, Lipid Bilayer, Capsid
7 Dec 2016
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Document Summary
Absence of dna and rna together in the same virion. Nucleocapsid is in cased within a bilipid layer. The lipid bilayer is not apart of the nucleocapsid. not apart of the nucleocapsid. Protects the genome from physical, chemical and enzymatic conditions. Has receptor proteins (spikes) that enable the recognition and attachment to the host cell. Found directly on the nucleocapsid in a naked virus. Found on the lipid bilayer on the enveloped virus. For some viruses, the capsid is surrounded by a lipid bilayer. Has enzymes or receptors (spikes) required for attachment and penetration. More susceptible because lipid bilayers are much more fragile. If you remove the lipid bilayer, the virus cannot continue the infectious cycle. Made of multiple subunits of a given protein. Viral species : a group of viruses sharing similar genetic information and ecological niche (host) Similar to strains, often designated with a number. More than one family may be included in one transmission grouping.
