【干冰】Anti-ATM Protein Kinase pS1981 (SHEEP) Antibody - 600-601-400S-【干冰】Anti-ATM Protein Kinase pS1981 (SHEEP) Antibody

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背景资料: ATM, the gene mutated in the hereditary disease ataxia-telangiectasia, codes for a protein kinase that acts as a master regulator of cellular responses to DNA double-strand breaks. ATM is normally inactive and the question of how it is activated in the event of DNA damage (due to ionizing radiation for instance) is central to understanding its function. ATM protein is now shown to be present in undamaged cells as an inactive dimer. Low doses of ionizing radiation, which induce only a few DNA breaks, activate at least half of the total ATM protein present, possibly in response to changes in chromatin structure. The ATM gene encodes a 370-kDa protein that belongs to the phosphoinositide 3-kinase (PI(3)K) superfamily, but which phosphorylates proteins rather than lipids. The 350-amino-acid kinase domain at the carboxy terminus of this large protein is the only segment of ATM with an assigned function. Exposure of cells to IR triggers ATM kinase activity and this function is required for arrests in G1, S and G2 phases of the cell cycle. Several substrates of the ATM kinase participate in these IR-induced cell-cycle arrests. These include p53, Mdm2 and Chk2 in the G1 checkpoint; Nbs1, Brca1, FancD2 and SMC1 in the transient IR-induced S-phase arrest; and Brca1 and hRad17 in the G2/M checkpoint. This antibody is similar to the rabbit host antibody discussed by Bakkenist, C. J. & Kastan, M. B. in Nature 421, 499-506 (2003).

免疫原: This antibody was affinity purified from whole sheep serum prepared by repeated immunizations with a synthetic peptide corresponding to a region near serine 1981 of human ATM conjugated to KLH using maleimide.

保存建议: Store vial at -20° C or below prior to opening. This vial contains a relatively low volume of reagent (25 µL). To minimize loss of volume dilute 1:10 by adding 225 µL of the buffer stated above directly to the vial. Recap, mix thoroughly and briefly centrifuge to collect the volume at the bottom of the vial. Use this intermediate dilution when calculating final dilutions as recommended below. Store the vial at -20°C or below after dilution. Avoid cycles of freezing and thawing.

其他: Rockland成立于1962年，是一家老牌抗体原产企业，其位于美国费城郊区的农场保有近20种实验动物。Rockland公司为生命科学领域提供丰富的、高质量的抗体，包括载脂蛋白、细胞周期/凋亡、细胞因子、细胞信号蛋白、酶类、细胞外基质、转录因子(NFkB)和泛素（Ubiquitin）等识别抗体，应用范围包括Western blot、免疫组化、免疫荧光和ELISA等。另外，Rockland也生产特别齐全的二抗，包括纯化、生物素、HRP/ALP、荧光标记二抗，应用十分广泛。