Related Experiment Video
Updated: May 29, 2025

09:07
Single-Step Enrichment of a TAP-Tagged Histone Deacetylase of the Filamentous Fungus Aspergillus nidulans for Enzymatic Activity Assay
Published on: May 1, 2019
6.8K
Scaffolding Activities of Pseudodeacetylase HDAC7
Ishadi K M Kodikara1, Mary Kay H Pflum1
1Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States.
ACS Chemical Biology
|February 5, 2025
Summary
Histone deacetylase 7 (HDAC7) proteins function as scaffolds, not enzymes, in gene regulation. This review details HDAC7
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Histone deacetylases (HDACs) regulate gene expression by removing acetyl groups from proteins.
- HDAC inhibitors are developed as anticancer therapeutics.
- Class IIa HDACs (HDAC4, 5, 7, 9) are pseudodeacetylases with scaffolding functions.
Purpose of the Study:
- To explore the diverse scaffolding roles of HDAC7.
- To highlight the acetylation-mediated reversible scaffolding of HDAC7.
- To provide molecular insights for drug design in normal and pathological conditions.
Main Methods:
- Literature review of HDAC7 scaffolding functions.
- Analysis of acetylation-mediated reversible scaffolding.
- Exploration of acetyllysine-binding reader functions.
Main Results:
- HDAC7 acts as a scaffold, recruiting active HDACs for substrate deacetylation.
- HDAC7 exhibits acetylation-mediated reversible scaffolding.
- HDAC7 possesses acetyllysine-binding reader capabilities.
Conclusions:
- Understanding HDAC7 scaffolding is crucial for comprehending gene regulation.
- HDAC7's unique functions offer potential for novel therapeutic strategies.
- Further research into HDAC7 will facilitate drug development for various conditions.
Related Concept Videos
Anaphase Promoting Complex
2.8K
The stepwise destruction of specific proteins is necessary for the progression and completion of the cell cycle. Such proteins are ubiquitinated by ubiquitin ligases and then subsequently destroyed by the proteasome. The SCF (Skp1/Cullin/F-box) and the anaphase-promoting complex (APC) are two important ubiquitin ligases involved in cell cycle progression. While SCF is active throughout the cell cycle, APC gets activated during metaphase to anaphase transition. Cdc20 or Cdh1 binds to APC and...
2.8K
Spreading of Chromatin Modifications
8.2K
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
Writers
The writer...
8.2K
Chromatin Modification in iPS Cells
1.6K
Chromatin modification alters gene expression; therefore, scientists can add histone-modifying enzymes, histone variants, and chromatin remodeling complexes to somatic cells to aid reprogramming into pluripotent stem (iPS) cells.
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
1.6K
Assembly of Signaling Complexes
5.7K
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
5.7K
Histone Modification
13.0K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
13.0K
Separation of Sister Chromatids
3.6K
At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
At the onset of anaphase, separase, a proteolytic enzyme, is...
At the onset of anaphase, separase, a proteolytic enzyme, is...
3.6K

