ArticleJournal of virology2020
Characterization of the Termini of Cytoplasmic Hepatitis B Virus Deproteinated Relaxed Circular DNA.
Article in Journal of virology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 26 citations in OpenAlex.
- The Antiviral Activity of Polyphenols.Molecular nutrition & food research · 2025Review
- Host 3' flap endonuclease Mus81 plays a critical role in trimming the terminal redundancy of hepatitis B virus relaxed circular DNA during covalently closed circular DNA formation.PLoS pathogens · 2025Article
- Targeting HBV cccDNA Levels: Key to Achieving Complete Cure of Chronic Hepatitis B.Pathogens (Basel, Switzerland) · 2024Review
- Meeting report of the 37th International Conference on Antiviral Research in Gold Coast, Australia, May 20-24, 2024, organized by the International Society for Antiviral Research.Antiviral research · 2024Article
- Roles Played by DOCK11, a Guanine Nucleotide Exchange Factor, in HBV Entry and Persistence in Hepatocytes.Viruses · 2024Review
- Detection of Hepatitis B Virus Covalently Closed Circular DNA and Intermediates in Its Formation.Methods in molecular biology (Clifton, N.J.) · 2024Article
- Recent Updates on Viral Oncogenesis: Available Preventive and Therapeutic Entities.Molecular pharmaceutics · 2023Review
- Heat Shock Protein Family A Member 1 Promotes Intracellular Amplification of Hepatitis B Virus Covalently Closed Circular DNA.Journal of virology · 2023Article
- Pregenomic RNA Launch Hepatitis B Virus Replication System Facilitates the Mechanistic Study of Antiviral Agents and Drug-Resistant Variants on Covalently Closed Circular DNA Synthesis.Journal of virology · 2022Article
- Host cell-dependent late entry step as determinant of hepatitis B virus infection.PLoS pathogens · 2022Article
- Region-Specific Hepatitis B Virus Genome Exposure from Nucleocapsid Modulated by Capsid Linker Sequence and Inhibitor: Implications for Uncoating.Journal of virology · 2022Article
- Proteomic Analysis of Nuclear Hepatitis B Virus Relaxed Circular DNA-Associated Proteins Identifies UV-Damaged DNA Binding Protein as a Host Factor Involved in Covalently Closed Circular DNA Formation.Journal of virology · 2022Article
- Regulation of Hepatitis B Virus Virion Release and Envelopment Timing by Nucleocapsid and Envelope Interactions.Journal of virology · 2022Article
- Mechanism of Hepatitis B Virus cccDNA Formation.Viruses · 2021Review
- Early Steps of Hepatitis B Life Cycle: From Capsid Nuclear Import to cccDNA Formation.Viruses · 2021Review
- Hepatitis B virus cccDNA is formed through distinct repair processes of each strand.Nature communications · 2021Article
- New Insights on Molecular Mechanism of Hepatitis B Virus Covalently Closed Circular DNA Formation.Cells · 2020Review
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
Abstract
The biosynthesis of hepatitis B virus (HBV) covalently closed circular DNA (cccDNA) requires the removal of the covalently linked viral polymerase from the 5' end of the minus strand [(-)strand] of viral relaxed circular DNA (rcDNA), which generates a deproteinated rcDNA (DP-rcDNA) intermediate. In the present study, we systematically characterized the four termini of cytoplasmic HBV DP-rcDNA by 5'/3' rapid amplification of cDNA ends (RACE), 5' radiolabeling, and exonuclease digestion, which revealed the following observations: (i) DP-rcDNA and rcDNA possess an identical 3' end of (-)strand DNA; (ii) compared to rcDNA, DP-rcDNA has an extended but variable 3' end of plus strand [(+)strand] DNA, most of which is in close proximity to direct repeat 2 (DR2); (iii) DP-rcDNA exhibits an RNA primer-free 5' terminus of (+)strand DNA with either a phosphate or hydroxyl group; and (iv) the 5' end of the DP-rcDNA (-)strand is unblocked at nucleotide G1828, bearing a phosphate moiety, indicating the complete removal of polymerase from rcDNA via unlinking the tyrosyl-DNA phosphodiester bond during rcDNA deproteination. However, knockout of cellular 5' tyrosyl-DNA phosphodiesterase 2 (TDP2) did not markedly affect rcDNA deproteination or cccDNA formation. Thus, our work sheds new light on the molecular mechanisms of rcDNA deproteination and cccDNA biogenesis.
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