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Updated: Jul 17, 2026
09:26
Reconstitution of Nucleosomes with Differentially Isotope-labeled Sister Histones
Published on: March 26, 2017
Enhanceosomes.
1Department of Biochemistry and Molecular Biophysics, Columbia University, New York, New York 10032, USA.
Current Opinion in Genetics & Development
|March 16, 2001
Summary
Specific gene activation in eukaryotes relies on enhanceosomes, which are complex DNA-protein structures. These enhanceosomes ensure precise gene transcription by requiring all components to be present for activation.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Gene transcription in higher eukaryotes involves complex cis-acting elements.
- Specificity in gene transcription is increasingly attributed to enhanceosomes.
Purpose of the Study:
- To explore the role of enhanceosomes in gene-specific transcriptional regulation.
- To understand the mechanism of enhanceosome assembly and function.
Main Methods:
- The study reviews existing literature and theoretical models of enhanceosome function.
- Analysis of co-operativity in enhanceosome assembly and synergistic transcription activation.
Main Results:
- Enhancesomes are higher-order, three-dimensional transcription factor/enhancer DNA complexes.
- Co-operativity in assembly and synergy in transcription ensure gene-specific activation.
- Enhancesomes recruit chromatin modifiers and basal transcription factors to promoters.
Conclusions:
- Enhancesomes provide a mechanism for precise, gene-specific transcriptional control.
- The presence of all enhanceosome components is critical for activating gene transcription.
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