Methylation of DNA at cytosine residues plays an important role in regulation of gene expression, genomic imprinting and is essential for mammalian development. Hypermethylation of CpG islands in tumor suppressor genes or hypomethylation of bulk genomic DNA may be linked with development of cancer. To date, 3 families of mammalian DNA methyltransferase genes have been identified which include Dnmt1, Dnmt2 and Dnmt3. Dnmt1 is constitutively expressed in proliferating cells and inactivation of this gene causes global demethylation of genomic DNA and embryonic lethality. Dnmt2 is expressed at low levels in adult tissues and its inactivation does not affect DNA methylation or maintenance of methylation. The Dnmt3 family members, Dnmt3a and Dnmt3b, are strongly expressed in ES cells but their expression is down regulated in differentiating ES cells and is low in adult somatic tissue. Dnmt1 co-purifies with the retinoblastoma (Rb) tumour suppressor gene product, E2F1, and HDAC1. Dnmt1 also cooperates with Rb to repress transcription from promoters containing E2F-binding sites suggesting a link between DNA methylation, histone deacetylase and sequence-specific DNA binding activity, as well as a growth-regulatory pathway that is disrupted in nearly all cancer cells (1-6).
應用類型
WB | IHC | IP | ChIP
免疫原
人 DNMT1合成肽，氨基酸序號 637-650.
來源宿主
小鼠
反應性
人 | 小鼠 | 魚 | 斑馬魚
保存建議
廠家推薦藍冰運輸。收到產品后建議保存于-20oC。
其他
StressMarq Biosciences Inc. 在2007年成立于加拿大維多利亞，是一家生物科技公司，專門從事試劑與試劑盒研究，服務范圍遍及全球50多個國家。 StressMarq公司的核心技術領域為細胞應激（尤其是熱休克蛋白（HSP）領域，領先全球），離子通道，載體研究，同時在神經科學領域推出特有的具有生物活性的Tau蛋白與A-突觸核蛋白。產品領域涉及到：細胞凋亡、細胞信號、通路和轉運、細胞器標志物、熱休克、神經生物學、神經科學、氧化應激、磷酸化運輸等。除了提供用于進一步研究的相關工具外，StressMarq還提供全新的尖端研究工具，用于開發新的生物項目，包括全球獨一無二的A B晶體蛋白ELISA試劑盒（現在是公認的乳腺癌標志物）；熱休克同源蛋白70（Hsc70）ELISA試劑盒；以及用于神經衰退研究的Tau活性蛋白與A-突觸核蛋白。本公司已將專業技術擴展到抗體、小分子離子通道與載體等更新領域，前者包括當前熱門的核心領域：Nav、Cav、TRP、Kv、KCNQ、HCN，后者包括當前熱門的核心領域：ENaC、NCC和NKCC2以及主要水通道蛋白載體。
