Related Experiment Video
Updated: Jul 17, 2026

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.
Abstract:
Gene-specific transcriptional regulation in higher eukaryotes is mediated by complex cis-acting control elements that specify the location, timing and magnitude of the response. During the past five years, an argument has been made that in several cases specificity in gene transcription is achieved by the assembly of higher-order three-dimensional transcription factor/enhancer DNA complexes, termed enhanceosomes. The inherent co-operativity in enhanceosome assembly and the embedded synergy in transcription ensure that a specific gene would be selected for activation only if all the enhanceosome components are present in the same nucleus. Enhanceosomes activate transcription by recruiting chromatin-modifying activities and basal transcription factors to the nearby promoters.
Related Concept Videos
The Nucleosome
DNA is wound twice around a protein complex called histone core, that consist of 8 histone proteins. This complex...
Nucleosome Remodeling
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
Histone Modification
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone deacetylase,...
Maturation of Endosomes
Changes in location
The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
The Nucleosome
DNA is wound twice around a protein complex called histone core, that consist of 8 histone proteins. This complex...
The Nucleosome
In a chromosome, DNA is wound twice around a protein complex called a histone octamer core, which consists of 8 histone proteins. This...

