ArticleJournal of virology2009
Brd4 regulation of papillomavirus protein E2 stability.
Article in Journal of virology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
What it found
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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.
The trial behind it
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Who cites it
35 citing papers in PubMed, 50 citations in OpenAlex.
- Article
- Article
- E2 Tyrosine 102 Regulates MmuPV1 Pathogenesis In Vivo.Pathogens (Basel, Switzerland) · 2025Article
- Review
- A Conserved Di-Lysine Motif in the E2 Transactivation Domain Regulates MmuPV1 Replication and Disease Progression.Pathogens (Basel, Switzerland) · 2025Article
- Human Papillomavirus 16 E2 Interaction with TopBP1 Is Required for E2 and Viral Genome Stability during the Viral Life Cycle.Journal of virology · 2023Article
- Human Papillomaviruses as Infectious Agents in Gynecological Cancers. Oncogenic Properties of Viral Proteins.International journal of molecular sciences · 2022Review
- The Functions of BET Proteins in Gene Transcription of Biology and Diseases.Frontiers in molecular biosciences · 2021Review
- Multiple Roles of Brd4 in the Infectious Cycle of Human Papillomaviruses.Frontiers in molecular biosciences · 2021Review
- Phosphorylation of the Human Papillomavirus E2 Protein at Tyrosine 138 Regulates Episomal Replication.Journal of virology · 2020Article
- High Levels of Within-Host Variations of Human Papillomavirus 16Frontiers in microbiology · 2020Article
- Phosphorylation of a Conserved Tyrosine in the Papillomavirus E2 Protein Regulates Brd4 Binding and Viral Replication.Journal of virology · 2019Article
- Human Papillomavirus Replication Regulation by Acetylation of a Conserved Lysine in the E2 Protein.Journal of virology · 2018Article
- Phosphorylation of the Bovine Papillomavirus E2 Protein on Tyrosine Regulates Its Transcription and Replication Functions.Journal of virology · 2017Article
- The Cellular DNA Helicase ChlR1 Regulates Chromatin and Nuclear Matrix Attachment of the Human Papillomavirus 16 E2 Protein and High-Copy-Number Viral Genome Establishment.Journal of virology · 2017Article
- HPV disease transmission protection and control.Microbial cell (Graz, Austria) · 2016Review
- Papillomavirus-Associated Tumor Formation Critically Depends on c-Fos Expression Induced by Viral Protein E2 and Bromodomain Protein Brd4.PLoS pathogens · 2016Article
- Evidence supporting a role for TopBP1 and Brd4 in the initiation but not continuation of human papillomavirus 16 E1/E2-mediated DNA replication.Journal of virology · 2015Article
- SMCX and components of the TIP60 complex contribute to E2 regulation of the HPV E6/E7 promoter.Virology · 2014Article
- The role of ubiquitin and ubiquitin-like modification systems in papillomavirus biology.Viruses · 2014Review
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
The papillomavirus (PV) E2 protein is an important regulator of the viral life cycle. It has diverse roles in viral transcription, DNA replication, and genome maintenance. Our laboratory has previously identified the cellular bromodomain protein Brd4 as a key interacting partner of E2. Brd4 mediates the transcriptional activation function of E2 and plays an important role in viral genome maintenance in dividing cells. E2 interacts with the C-terminal domain (CTD) of Brd4, and the CTD functions in a dominant-negative manner through binding E2 and interfering with E2's interaction with the full-length Brd4 protein. Previous studies have shown that PV E2 proteins are short lived; however, the mechanisms regulating their stability and degradation have not yet been well established. In this study, we explored the role of Brd4 in the regulation of bovine PV 1 (BPV1) and human PV 16 (HPV16) E2 stability. Expression of the Brd4 CTD dramatically increases E2 levels. Both BPV1 E2 and HPV16 E2 are regulated by ubiquitylation, and Brd4 CTD expression blocks this ubiquitylation, thus stabilizing the E2 protein. Furthermore, we have identified the cullin-based E3 ligases and specifically cullin-3 as potential components of the ubiquitylation machinery that targets both BPV1 and HPV16 E2 for ubiquitylation. Expression of the Brd4 CTD blocks the interaction between E2 and the cullin-3 complex. In addition to Brd4's role in mediating E2 transcription and genome tethering activities, these data suggest a potential role for Brd4 in regulating E2 stability and protein levels within PV-infected cells.
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Registered trials
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.