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Virus Protein Hepatitis Viral Genetics Complementation Define Viruses

Front Viral genetics

Complementation
Define, 1 example?
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When 1 of 2 viruses that infect the cell has a mutation that results in a nonfunctional protein, the
nonmutated virus “complements” the mutated one by making a functional protein that serves
both viruses. 

For example, hepatitis D virus requires the presence of replicating hepatitis B virus
to supply HBsAg, the envelope protein for HDV.

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