1. Signaling Pathways
  2. Cell Cycle/DNA Damage
    PI3K/Akt/mTOR
  3. DNA-PK

DNA-PK (DNA依赖蛋白激酶)

DNA-PKcs (DNA-dependent protein kinase, catalytic subunit) is an enzyme that in humans is encoded by the PRKDC gene. DNA-PKcs belongs to the phosphatidylinositol 3-kinase-related kinase protein family. DNA-PKcs is the catalytic subunit of a nuclear DNA-dependent serine/threonine protein kinase called DNA-PK. The second component is the autoimmune antigen Ku. On its own, DNA-PKcs is inactive and relies on Ku to direct it to DNA ends and trigger its kinase activity. DNA-PKcs is required for the non-homologous end joining (NHEJ) pathway of DNA repair. Many proteins have been identified as substrates for the kinase activity of DNA-PK. Autophosphorylation of DNA-PKcs appears to play a key role in NHEJ and is thought to induce a conformational change that allows end processing enzymes to access the ends of the double-strand break. DNA-PK also cooperates with ATR and ATM to phosphorylate proteins involved in the DNA damage checkpoint.

DNA-PK 相关产品 (4):

Cat. No. Product Name Effect Purity
  • HY-10108
    LY294002 Inhibitor 99.95%
    LY294002 是一种广谱 PI3K 抑制剂,抑制 PI3Kα, PI3KδPI3KβIC50 分别为 0.5, 0.57, 0.97 μM。LY294002 也可抑制 CK2 的活性,IC50 为 98 nM。LY294002 是一种竞争性 DNA-PK 抑制剂,可逆结合 DNA-PK 的激酶结构域,IC50 为 1.4 μM。LY294002 是一种自噬 (autophagy) 和凋亡 (apoptosis) 激活剂。
  • HY-101667
    LTURM34 Inhibitor 99.24%
    LTURM34 是一种特异的 DNA-PK 抑制剂 (IC50=34 nM)。与 PI3K 相比,LTURM34 对 DNA-PK 的选择性高 170 倍。LTURM34 在多种肿瘤细胞系中显示出有效的抗增殖活性。
  • HY-19977
    YU238259 Inhibitor 99.57%
    YU238259 是一种同源依赖性 DNA 修复 (HDR) 抑制剂,可用于癌症研究。
  • HY-19341
    Compound 401 Inhibitor 99.97%
    Compound 401 是一种合成的 DNA-PK (IC50=0.28 μM) 抑制剂,在体外也靶向作用于 mTOR,但对 PI3K 没有抑制效果。
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