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Updated: Nov 20, 2025

In Vitro Ubiquitination and Deubiquitination Assays of Nucleosomal Histones
Published on: July 25, 2019
Emerging multifaceted roles of BAP1 complexes in biological processes
Aileen Patricia Szczepanski1, Lu Wang2
1Simpson Querrey Center for Epigenetics and the Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, 303 East Superior Street, Chicago, IL, 60611, USA.
Histone H2AK119 mono-ubiquitination (H2AK119Ub) is regulated by PRC1 and reversed by the BAP1 complex. This review explores BAP1
Area of Science:
- Epigenetics and Gene Regulation
- Molecular Biology
- Biochemistry
Background:
- Histone H2AK119 mono-ubiquitination (H2AK119Ub) is a key epigenetic mark, primarily established by Polycomb Repressive Complex 1 (PRC1).
- H2AK119Ub mediates transcriptional repression, influencing gene expression patterns.
- The BAP1 complex acts as a counter-regulator, reversing H2AK119Ub and functioning as a transcriptional activator.
Purpose of the Study:
- To review recent advancements in understanding the BAP1 complex.
- To elucidate the diverse functional roles and regulatory mechanisms of the BAP1 complex.
- To explore the therapeutic potential of targeting the BAP1 complex.
Main Methods:
- Literature review of recent findings on BAP1 complex.
- Analysis of studies on BAP1's role in transcriptional regulation.
- Examination of BAP1's involvement in development, metabolism, and cancer.
Main Results:
- The BAP1 complex plays critical roles in cellular processes beyond histone modification.
- BAP1 targets include non-histone proteins, expanding its regulatory scope.
- Understanding BAP1's complex forms and substrates is crucial for deciphering its functions.
Conclusions:
- The BAP1 complex is a versatile regulator with significant implications in various biological contexts.
- Further research into BAP1's mechanisms is warranted.
- Targeting BAP1 presents a promising avenue for therapeutic interventions in diseases like cancer.
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