Abcam's HDAC8 Activity Assay Kit (Fluorometric) (ab156069) detects HDAC activity in lysates.
Histone deacetylase that catalyzes the deacetylation of lysine residues on the N-terminal part of the core histones (H2A, H2B, H3 and H4) (PubMed:10748112, PubMed:10922473, PubMed:10926844, PubMed:14701748, PubMed:28497810). Histone deacetylation gives a tag for epigenetic repression and plays an important role in transcriptional regulation, cell cycle progression and developmental events (PubMed:10748112, PubMed:10922473, PubMed:10926844, PubMed:14701748). Histone deacetylases act via the formation of large multiprotein complexes (PubMed:10748112, PubMed:10922473, PubMed:10926844, PubMed:14701748). Also involved in the deacetylation of cohesin complex protein SMC3 regulating release of cohesin complexes from chromatin (PubMed:22885700). May play a role in smooth muscle cell contractility (PubMed:15772115). In addition to protein deacetylase activity, also has protein-lysine deacylase activity: acts as a protein decrotonylase by mediating decrotonylation ((2E)-butenoyl) of histones (PubMed:28497810).
HDACL1, CDA07, HDAC8, Histone deacetylase 8, HD8, Protein deacetylase HDAC8, Protein decrotonylase HDAC8
Abcam's HDAC8 Activity Assay Kit (Fluorometric) (ab156069) detects HDAC activity in lysates.
Abcam's HDAC8 Activity Assay Kit (Fluorometric) (ab156069) detects HDAC activity in lysates.
Primarily, the HDAC8 Activity Assay Kit (Fluorometric) is designed for the rapid and sensitive evaluation of HDAC inhibitors using recombinant HDAC8. Additionally, any cultured primary cell, cell line, or tissue homogenate can be assayed for HDAC8 activity with the HDAC8 Activity Assay Kit (Fluorometric) after immunoprecipitation with an appropriate HDAC8 specific antibody.
Applications for this kit include:
1. Monitoring the purification of HDACs including HDAC1, 2, 3 and 8 (class I).
2. Screening inhibitors or activators of HDAC8.
3. Detecting the effects of pharmacological agents on HDAC8.
Histone Deacetylases (HDACs) are a class of enzymes responsible for the deacetylation of lysine residues on the N-terminal part of the core histones (H2A, H2B, H3 and H4), allowing the histones to wrap the DNA more tightly.
HDAC proteins occur in four groups (class I, class IIA, class IIB, class III, class IV) based on function and DNA sequence similarity.
Classes I, IIA and IIB are considered "classical" HDACs whose activities are inhibited by trichostatin A (TSA), whereas class III is a family of NAD+-dependent proteins (sirtuins) not affected by TSA. Class IV is considered an atypical class on its own, based solely on DNA sequence similarity to the others.
The protein HDAC8 also known as Histone Deacetylase 8 functions mechanically by removing acetyl groups from histone tails influencing chromatin structure and gene expression. HDAC8 has a molecular mass of roughly 41 kDa. It expresses in various tissues but shows higher expression in smooth muscle cells and certain cancer cell lines. Researchers also note its expression in the brain and liver corresponding to sections that require its deacetylase activity for various regulatory functions.
HDAC8 plays a role in regulating transcription by being involved in altering chromatin structure. It does not form part of a large multi-protein complex unlike some other histone deacetylases. Its activity affects cell cycle progression and differentiation which is central to cellular physiology. HDAC8 also participates in non-histone protein deacetylation impacting various substrates allowing it to govern diverse cellular processes.
Scientists associate HDAC8 with cell cycle regulation and muscle contraction. HDAC8 plays a role in the molecular pathways that control how myosin light chains undergo deacetylation interacting with proteins such as smooth muscle actin. During cell cycle regulation HDAC8 affects p53 a protein critical in controlling cell cycle progression and apoptosis integrating into pathways that decide cellular outcomes during division and response to stress.
Researchers identify HDAC8 as having connections to certain cancers and Cornelia de Lange Syndrome (CdLS). Its deregulation links to tumorigenesis particularly in colorectal and neuroblastoma cancers where it may interact with oncogenes and tumor suppressors. In CdLS mutations that affect HDAC8 lead to developmental issues with the disorder being connected to the cohesin complex proteins which highlight HDAC8's importance in chromosomal cohesion and gene expression regulation.
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Dose dependency of recombinant HDAC8 (30min.)
Time course of HDAC8 reaction
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