Evidence map›Paper›PMID 33789995›Full record

ArticleJournal of virology2021

Regulation of Hepatitis B Virus Replication by Cyclin Docking Motifs in Core Protein.

Haitao Liu, Ji Xi, Jianming Hu

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.6field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
  2. Hepatitis B virus covalently closed circular DNA formation in murine hepatic cells uncovers a late entry block.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Article
  4. Article
  5. Hepatitis B Virus Nucleocapsid Assembly.Journal of molecular biology · 2025
    Review
  6. Review
  7. Hepatitis B virus entry, assembly, and egress.Microbiology and molecular biology reviews : MMBR · 2024
    Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
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  18. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Haitao LiuDepartment of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA.
Ji XiDepartment of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA.
Jianming HuDepartment of Microbiology and Immunology, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA juh13@psu.edu.ORCID 0000-0002-3967-2133
Pennsylvania State University · US

Funding

MECHANISMS OF HEPADNAVIRUS ASSEMBLY AND REPLICATIONR01AI043453 · NIAID · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI HU, JIANMING · 1999 to 2017
$5.9M
Mechanisms of Hepadnavirus Assembly and ReplicationR37AI043453 · NIAID · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI Jianming Hu · 2018 to 2026
$3.8M
Regulation of Hepatitis B Virus Capsid AssemblyR01AI127670 · NIAID · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI HU, JIANMING · 2016 to 2020
$1.9M
NIAID NIH HHS R01 AI043453NIAID NIH HHS R01 AI127670NIAID NIH HHS R37 AI043453
6 · The paper itself

Abstract

Hepatitis B virus (HBV) capsid or core protein (HBc) consists of an N-terminal domain (NTD) and a C-terminal domain (CTD) connected by a short linker peptide. Dynamic phosphorylation and dephosphorylation of HBc regulate its multiple functions in capsid assembly and viral replication. The cellular cyclin-dependent kinase 2 (CDK2) plays a major role in HBc phosphorylation and, furthermore, is incorporated into the viral capsid, accounting for most of the "endogenous kinase" activity associated with the capsid. The packaged CDK2 is thought to play a role in phosphorylating HBc to trigger nucleocapsid disassembly (uncoating), an essential step during viral infection. However, little is currently known on how CDK2 is recruited and packaged into the capsid. We have now identified three RXL motifs in the HBc NTD known as cyclin docking motifs (CDMs), which mediate the interactions of various CDK substrates/regulators with CDK/cyclin complexes. Mutations of the CDMs in the HBc NTD reduced CTD phosphorylation and diminished CDK2 packaging into the capsid. Also, the CDM mutations showed little effects on capsid assembly and pregenomic RNA (pgRNA) packaging but impaired the integrity of mature nucleocapsids. Furthermore, the CDM mutations blocked covalently closed circular DNA (CCC DNA) formation during infection while having no effect on or enhancing CCC DNA formation via intracellular amplification. These results indicate that the HBc NTD CDMs play a role in CDK2 recruitment and packaging, which, in turn, is important for productive infection.

Indexed as

Protein Interaction Domains and MotifsVirus ReplicationCapsidCapsid ProteinsCyclin-Dependent Kinase 2CyclinsHepatitis B virusHep G2 CellsHumansNucleocapsidPhosphorylationProtein DomainsRNA, ViralViral Core ProteinsVirus AssemblyCapsid ProteinsCDK2 protein, humanCyclin-Dependent Kinase 2CyclinsRNA, ViralViral Core Proteinscapsidcore proteincovalently closed circular DNAcyclincyclin-dependent kinase 2cyclin docking motifendogenous kinasehepadnavirushepatitis B virusinfection

Identifiers

PMID33789995
PMCPMC8316097
OpenAlexW3139742268

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.