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The diverse functions of histone acetyltransferase complexes
Michael J Carrozza1, Rhea T Utley, Jerry L Workman
1Department of Biochemistry and Molecular Biology, Howard Hughes Medical Institute, Penn State University, University Park, PA 16803, USA. mjc28@psu.edu
Trends in Genetics : TIG
|June 13, 2003
Summary
Histone acetylation, historically tied to gene activation, is now understood to have broader roles. Enzymes catalyzing this process are crucial for gene silencing, DNA repair, and cell cycle progression, highlighting their importance in cell development.
Area of Science:
- Biochemistry
- Molecular Biology
- Epigenetics
Background:
- Histone acetylation is traditionally associated with activating gene transcription.
- Emerging evidence suggests a wider functional spectrum for histone acetylation and its associated enzymes.
- These enzymes play multifaceted roles beyond simple gene activation.
Purpose of the Study:
- To explore the diverse functions of histone acetyltransferase complexes.
- To highlight the involvement of these complexes in various cellular processes.
- To emphasize the conserved nature and fundamental importance of these complexes.
Main Methods:
- Review of recent scientific literature on histone acetylation and acetyltransferase complexes.
- Analysis of conserved functions across different organisms.
- Functional categorization of acetyltransferase complex activities.
Main Results:
- Histone acetyltransferase complexes are implicated in transcription activation.
- These complexes are also involved in gene silencing.
- Furthermore, they play critical roles in DNA repair and cell-cycle progression.
Conclusions:
- Histone acetylation and its modifying enzymes have diverse functions.
- These complexes are integral to fundamental cellular processes like DNA repair and cell division.
- The high conservation of these complexes underscores their essential role in cell growth and development.