BIOL 1010 Lecture Notes - Nuclear Membrane, Virus Classification, Antigenicity
Document Summary
The seven groups used to classify viruses are then: dsdnz viruses, ssdna viruses, dsdna viruses, (+) ssrna viruses, (-) ssrna (influenza) viruses, rna reverse transcribing viruses (aids, leukemia, dna reverse transcribing viruses. Before the progeny virion actually exit the cell, their components of the virus must be assembled, forming the basic structure of the virus. Once the basic structure is formed, many viruses undergo changes to their structural proteins. These protein cleavages and rearrangements allow the virion more thermodynamically stable configurations as well as a better=product the viral genome. Finally, the progeny can exit the host cell by lysine it or by budding. Assembly involves putting together all the components of the progeny virion, including the nucleic acid enclosed in the protective protein capsid. Molecular and cellular chaperones may be made by some viruses to aid in assembly of the viral components, although they do not contribute to the virus structure.
