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Recombinant Mononucleosomes (H2A.X)-biotinylated
Recombinant Mononucleosomes (H2A.X)-biotinylated
- 中文名称：
- Recombinant Mononucleosomes (H2A.X)-biotinylated
- 英文名称：
- Recombinant Mononucleosomes (H2A.X)-biotinylated
- 品牌：
- AAA Biotech
- 品牌介绍：
- AAA Biotech专注于为全球生命科学研究提供高品质的蛋白质研究工具，核心产品包括经严格验证的抗体、重组蛋白及ELISA试剂盒。
- 货号：
- AAA59761
- 规格：
- 0.02 mg|2x0.02 mg|3x0.02 mg|4x0.02 mg|5x0.02 mg
- 保存建议：
- Recombinant proteins in solution are temperature sensitive and must be stored at -80 degree C to prevent degradation. Avoid repeated freeze/thaw cycles and keep on ice when not in storage.
Shipping Temp: Dry Ice
- 货期：
- 6-8周
- 纯度：
- N/A
- 产品形式：
- Recombinant Mononucleosomes (H2A.X)-biotinylated (20ug protein + 19.2ug DNA) are supplied in 10mM Tris-HCl, pH8.0, 1mM EDTA, 2mM DTT and 20% glycerol.
- 免责声明：
- *本产品仅供科研实验使用，不得用于临床诊断。*
- 说明书：
Short Description: Nucleosomes comprise the smallest subunit of chromatin; they consist of 147 bp of DNA wrapped around an octamer of core histone proteins (H2A, H2B, H3 and H4). Therefore, nucleosomes are more physiologically relevant substrates than histones and histone-derived peptides for use in in vitro studies. More importantly, some histone methyltransferases are significantly more active, as well as specific, when using nucleosomal substrates in HMT assays, such as DOT1L and NSD family enzymes. Nucleosomes are also widely used in histone methyltransferase screening assays to identify small molecular inhibitors for drug discovery.
Background: In vivo, the nucleosome is the basic structural unit of chromatin. It is comprised of about 146 bp of DNA wrapped around a core of eight histones of four different types: H2A, H2B, H3 and H4. Histones are subject to posttranslational modifications, such as methylation, acetylation, phosphorylation, mono-ubiquitination, etc. Histone modifications influence multiple chromatin templated processes such as gene transcription, DNA repair and recombination. Besides the "major" histones, there are some histone variants in specific regions of chromatin or in specific cell types. Histone variants are involved in multiple biology processes including chromosome segregation, DNA repair, transcriptional regulation and mRNA processing. H2A.X (also known as H2AFX, Histone Family Member X) is a histone H2A family member. In mammals, variant histone H2A.X represents 10% of the total H2A, whereas in yeast 90% of H2A is of the H2A.X class. The main function of H2AX is associated with the DNA damage repair (DDR) system which is induced by DNA double strand breaks (DSBs). In many species, including S. cerevisiae, Xenopus laevis, and Drosophila melanogaster, the fourth serine residue from the carboxyl-terminal end of histone H2A becomes phosphorylated. In mammals, this event is related to phosphorylation of the H2A.X variant histone on serine 139 by DNA-dependent protein kinases (ATR/ATM/DNA- PK). The phosphorylated form of H2A.X is commonly denoted as g-H2A.X. This H2A.XS139 phosphorylation facilitates the recruitment of the DNA damage repair machinery, as well as chromatin remodelers such as INO80 and SWR1. H2A.X is a regulator of the epithelial-mesenchymal transition. Nucleosomes are more physiologically relevant substrates than histones and histone-derived peptides for in vitro studies. More importantly, some histone methyltransferases are significantly more active, as well as specific, when using nucleosomal substrates in HMT assays, such as DOT1L and NSD family enzymes. Nucleosomes are also widely used in histone methyltransferase screening assays to identify small molecular inhibitors for drug discovery.
