Histone H1-derived Peptide contains basic and aromatic residues characteristic of chromatin-associated regions, promoting extended and helical structural motifs. Researchers employ it to explore peptide-DNA interactions, charge-mediated binding, and folding transitions. The sequence supports mechanistic modeling of chromatin-like environments.
CAT No: R2411
CAS No:889112-06-5
Synonyms/Alias:Histone H1-derived Peptide;889112-06-5;AKOS040758434;DA-74178;PD070583;G13563;
Histone H1-derived Peptide is a synthetic peptide fragment modeled after sequences found in the linker histone H1, a key chromatin-associated protein that plays a critical role in the higher-order structure and regulation of eukaryotic chromatin. As a representative of functional peptide domains from the histone H1 family, it provides a powerful research tool for dissecting the molecular mechanisms underlying chromatin dynamics, nucleosome assembly, and epigenetic regulation. The unique sequence and biochemical properties of this peptide make it highly relevant in studies of protein-DNA interactions, chromatin remodeling, and post-translational modification processes that govern gene expression and genome stability.
Epigenetic research: Histone H1-derived peptides are frequently employed in the investigation of chromatin architecture and epigenetic mechanisms. By mimicking specific regions of the H1 protein, these peptides allow researchers to probe the interactions between linker histones and nucleosomal DNA, as well as their influence on chromatin compaction and accessibility. Such studies are instrumental in elucidating how histone variants and their modifications modulate the epigenetic landscape, thereby impacting gene silencing, activation, and cellular differentiation processes.
Protein-protein interaction studies: The peptide serves as a valuable molecular probe for mapping the interaction surfaces between histone H1 and chromatin-associated factors, such as chromatin remodelers, histone chaperones, and regulatory complexes. Through techniques like pull-down assays, surface plasmon resonance, or co-immunoprecipitation, investigators can use the peptide to identify binding partners, characterize affinity profiles, and dissect the molecular determinants of histone-mediated protein networks. Insights gained from these studies contribute to a more comprehensive understanding of nuclear organization and genome regulation.
Antibody development and validation: Synthetic peptides derived from histone H1 sequences are commonly used as immunogens for generating highly specific antibodies against defined histone regions or post-translational modifications. These antibodies are essential reagents in chromatin immunoprecipitation (ChIP), Western blotting, and immunofluorescence assays, where precise detection and localization of histone H1 or its modified forms are required. The peptide also serves as a critical control in antibody specificity testing, facilitating the development of robust tools for chromatin biology research.
Enzymatic substrate assays: As a defined substrate, the peptide is utilized in in vitro enzymatic assays to investigate the activity and specificity of histone-modifying enzymes, such as kinases, phosphatases, acetyltransferases, and methyltransferases. By incorporating or mimicking known modification sites, it enables detailed kinetic and mechanistic studies of enzyme-substrate interactions, substrate preference, and modification patterns. These applications are vital for characterizing the regulatory roles of post-translational modifications in histone H1 function and chromatin dynamics.
Structural and biophysical analysis: The defined sequence and manageable size of histone H1-derived peptides make them suitable for high-resolution structural and biophysical studies, including nuclear magnetic resonance (NMR), circular dichroism (CD) spectroscopy, and molecular modeling. Researchers leverage the peptide to analyze conformational changes, folding properties, and interaction-induced structural rearrangements. Such investigations provide atomic-level insights into the structural basis of histone H1 function, its role in nucleosome stability, and its contribution to the dynamic nature of chromatin fibers.
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