半岛bd体育手机客户端 说明
一般描述
Histones are highly conserved proteins that serve as the structural scaffold for the organization of nuclear DNA into chromatin. The four core histones, H2A, H2B, H3, and H4, assemble into an octamer (2 molecules of each). Subsequently, 146 base pairs of DNA are wrapped around the octamer, forming a nucleosome. Histones are modified post-translationally by the actions of enzymes in both the nucleus and cytoplasm. These modifications regulate DNA transcription, repair, recombination, and replication. The most commonly studied modifications are acetylation, phosphorylation, methylation, and ubiquitination. These modifications can alter local chromatin architecture, or recruit trans-acting factors that recognize specific histone modifications (the "histone code" hypothesis). The modifications occur predominantly on the N-terminal and C-terminal tails that extend beyond the nucleosome core particle. Histone H3 is methylated at Lys27 by EZH2, and and overexpression of EZH2 has been associated with both breast and prostate cancers. Methylation of H3K27 is involved in X chroosome inactivation, imprinting, circadian rhythms, and stem cell maintenance. H3K27me2 is a marker of classical heterochromatin.
特异性
Broad species cross-reactivity expected, based on sequence identity in most species.
Histone H3 dimethylated on Lys27. An unidentified doublet sometimes appears by Western blotting in some lysates at ~35 kDa.
免疫原
Peptide containing the sequence (ARme2KSA) in which me2 corresponds to dimethyl lysine at residue 27 of human histone H3.
应用
Anti-dimethyl-Histone H3 (Lys27) Antibody, clone 614M is a rabbit monoclonal antibody for detection of dimethyl-Histone H3 (Lys27) also known as H3K27me2, Histone H3 (di methyl K27) & has been validated in WB, PIA.
Western Blot Analysis:
1:1000-1:5000 dilutions of a previous lot of this clone detected dimethyl-Histone H3 in acid extracted proteins from HeLa cells, but did not detect unmethylated recombinant Histone H3 (Catalog # 14-494).
Peptide Inhibition:
0.5-2 ?M of histone H3 peptides containing dimethyl-Lys27 abolished detection of histone H3 by anti-dimethyl-Histone H3 (Lys27), clone 614M (1:1000 dilution) in immunoblots of acid extracted proteins from HeLa cells.
质量
Routinely evaluated by western blot in acid extrated protein from mitotic HeLa cells.
Western Blot Analysis:
1:500-2000 dilutions of this lot detected dimethyl-Histone H3 in acid extracted proteins from HeLa cells.
目标描述
17 kDa
外形
Unpurified supernatant
储存及稳定性
1 year at -20°C from date of shipment
Handling Recommendations: Upon receipt, and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/ thaw cycles, which may damage IgG and affect product performance.
分析说明
Control
Acid extracted HeLa cell proteins
免责声明
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
基本信息
| eCl@ss | 32160702 |
| NACRES | NA.41 |
半岛bd体育手机客户端 性质
| 生物来源 | rabbit |
| 质量水平 | 100 |
| 抗体形式 | culture supernatant |
| antibody product type | primary antibodies |
| 克隆 | 614M, monoclonal |
| species reactivity | vertebrates |
| technique(s) | inhibition assay: suitable (peptide) western blot: suitable |
| 同位素/亚型 | IgG |
| NCBI登记号 | NM_021059.2 |
| UniProt登记号 | Q71DI3 |
| 运输 | dry ice |
安全信息
| 储存分类代码 | 12 - Non Combustible Liquids |
| WGK | WGK 1 |
| 闪点(F) | Not applicable |
| 闪点(C) | Not applicable |
Sigma-Aldrich
m.cnreagent.com
