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  • Title: Hepatitis B virus reverse transcriptase and its many roles in hepadnaviral genomic replication.
    Author: Ganem D, Pollack JR, Tavis J.
    Journal: Infect Agents Dis; 1994; 3(2-3):85-93. PubMed ID: 7529120.
    Abstract:
    The replication of hepatitis B virus DNA proceeds through reverse transcription of a pregenomic RNA intermediate, a reaction that takes place within viral nucleocapsids and is catalyzed by the viral P protein. P protein is involved in all phases of the reaction, serving as (a) a recognition factor for the selective encapsidation of the pregenomic RNA template; (b) the protein primer for the initiation of minus strand DNA synthesis; (c) the reverse transcriptase and DNA polymerase involved in strand elongation; and (d) the RNaseH activity required to remove RNA template prior to plus strand synthesis. P protein is capable of site-specific RNA recognition, specifically binding to a stem-loop structure at the 5' end of pregenomic RNA. This interaction is required for both RNA encapsidation and reverse transcription.
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