Histones are primary protein components of eukaryotic chromatin and play a role in gene regulation. H3 and H4 histones have tails protruding from the nucleosome that can be modified post-translationally to alter the histone's interactions with DNA and nuclear proteins, leading to epigenetic changes for regulating many normal and disease-related processes. A complete series of kits for the quantification of methylation, acetylation, and phosphorylation of H3 histones at all sites is offered. The most comprehensive selection of Histone Modification research products covers every step of your experimental workflow, from upstream to downstream.
In addition, EpiQuik Histone Modification Multiplex Assay Kits for measuring multiple histone H3 or histone 4 modifications simultaneously are provided.
Histones are the chief protein components of chromatin in biology. They act as spools around which DNA winds, and also play a role in gene regulation. The core histones include H2A, H2B, H3, and H4. Histones undergo post-translational modifications, which alter their interaction with DNA and nuclear proteins. Different Histone Preparation Kits for fast extraction of core histones are offered.
Histone methylation causes transcription repression or activation, depending on the target sites. Histone methyltransferases (HMTs) control or regulate DNA methylation through chromatin-dependent transcription repression or activation. Measurement of histone methyltrasferase activity and quantification of histone methylation patterns have become pivotal in studying epigenetic regulation of genes, as well as inhibitor discovery.
Histone acetylation and histone deacetylation involve the addition or removal of an acetyl group on lysine residues in the N-terminal tail and on the surface of the nucelosome core of histone proteins. Acetylated and deacetylated histones are considered epigenetic tags within chromatin by relaxing (euchromatin) or tightening (heterochromatin) chromatin structure, subsequently increasing or decreasing gene transcription levels. Different Assays for Quantification, Acetylation and Deacetylation are available.
Various histone modifications, such as histone citrullination, sumoylation and phosphorylation, have been shown to epigenetically impact gene expression through different mechanisms. Adjusting epigenetic marks and changing chromatin structure – known as chromatin remodeling – as a result of these histone modifications can influence gene regulation in many tissue types. Studying these histone modifications provides researchers with valuable insight into cellular processes such as apoptosis, cell growth, stress response, and transcriptional regulation.