Histone Protein Binding
Histone Protein Binding - Related Videos
02:32
Histone Modification
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2020
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 deacetylase,...
05:16
Detecting Histone Modifications in Yeast Cells with Neurodegenerative Protein Overexpression
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2025
Source: Bennett, S. A., et al., Characterizing Histone Post-translational Modification Alterations in Yeast Neurodegenerative Proteinopathy Models. J. Vis. Exp. (2019).This video demonstrates the procedure of assessing histone modifications in yeast cells overexpressing neurodegenerative proteins. The steps include cell lysis, centrifugation, electrophoresis, membrane transfer, and antibody-based detection of modified histones.
09:34
Identification of Modified Histones as Binding Substrates of Human Spindlin Family Member 4 (SPIN4) by Peptide Arrays and Native Nucleosome Pulldown
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2026
Genetic variants in human Spindlin Family Member 4 (SPIN4) have recently been identified in patients with bone overgrowth, a novel developmental disorder. A protocol and new results describing the biochemical identification of modified histones in the context of nucleosomes as SPIN4 binding substrates are presented.
07:51
Pull-down of Calmodulin-binding Proteins
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Cited by 19 •
2012
Calmodulin (CaM) pull-down assay is an effective way to investigate the interaction of CaM with various proteins. This method uses CaM-sepharose beads for efficient and specific analysis of CaM-binding proteins. This provides an important tool to explore CaM signaling in cellular function.
02:30
Histone Variants at the Centromere
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2020
Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3 variants are also...
FAQs
The interaction is primarily electrostatic: positively charged lysine- and arginine-rich histone regions are attracted to negatively charged phosphate groups in DNA. This charge complementarity helps stabilize DNA association, while chemical changes to histone tails can alter the strength of the interaction. Consequently, tail chemistry provides a mechanism for changing chromatin organization and the accessibility of genetic information.
Histone tail modifications can strengthen or weaken the association between histones and DNA. Changes in interaction strength influence how compactly chromatin is organized and how readily cellular machinery can access genetic information. This provides a regulatory layer beyond the DNA sequence itself, helping connect molecular changes in histones with altered gene expression and other genome-related activities.
By controlling DNA accessibility within chromatin, histone protein binding helps coordinate whether genome regions are available for processes such as gene expression, replication, or repair. Stronger or weaker interactions can therefore affect the timing and efficiency of these activities. Studying this relationship gives biologists a way to connect chromatin structure with broader cellular regulation.
Binding assays are used to investigate the association between histones and DNA, including how strongly the components interact under the conditions being studied. These experiments help test the contribution of histone regions and chemical tail modifications to binding behavior. Their results provide molecular evidence for models of chromatin organization and DNA accessibility.
Direct binding measurements focus on the association between histones and DNA, whereas chromatin analyses examine how those interactions contribute to genome organization. Using both approaches can link a molecular binding change with a structural consequence in chromatin. This combined perspective is useful when interpreting how altered histone interactions may affect gene regulation, replication, or repair.
Histone protein binding is central to epigenetic research because chromatin organization and histone tail chemistry can regulate access to genetic information without changing the DNA sequence itself. Binding assays and chromatin analyses therefore help researchers study regulation during development and investigate disease biology. The same framework connects molecular histone behavior with changes in cellular genome control.