DNA-PK
DNA-dependent protein kinase
DNA-PK (DNA-dependent protein kinase) is a nuclear serine/threonine protein kinase composed of a large catalytic subunit (DNA-PKcs) and a heterodimeric DNA-targeting subunit Ku. DNA-PK is a major component of the nonhomologous end-joining (NHEJ) pathway of DNA double-strand breaks repair. DNA-PK specifically requires association with DNA for its kinase activity, plays important roles in the regulation of different DNA transactions, including transcription, replication and DNA repair, as well as in the maintenance of telomeres.
The assembly of DNA-PK at DSB ends serves as a platform to recruit Artemis, DNA ligase IV and other NHEJ factors that are involved in end-processing and ligation. Within the DNA-PK complex, Ku proteins confer high affinity to DSB ends, and function as early sensors. The subsequent recruitment of DNA-PKcs to DSBs via the Ku proteins triggers the activation of DNA-PKcs, a member of the phosphatidylinositol 3-kinase-related kinase (PIKK) family. Upon activation, DNA-PKcs phosphorylates a number of substrates, including H2AX, XRCC4, Artemis and most importantly, DNA-PKcs itself. Autophosphorylation of DNA-PKcs occurs at numerous Ser/Thr residues throughout the kinase, and has been shown to mediate NHEJ.
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DNA-PK Related Products (83)
Related Products (83)
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Antibodies (5)
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NU-7163
0 ImagesCat. No.: HY-116621CAS No.: 503468-03-9NU-7163 is an ATP-competitive DNA-PK inhibitor (IC50=0.19 μM; Ki=24 nM). NU-7163 enhances the cytotoxicity of ionizing radiation against the HeLa human tumor cell line in vitro.
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KU-57788 (Standard)
0 ImagesCat. No.: HY-11006RCAS No.: 503468-95-9Synonyms: NU7441 (Standard)KU-57788 (Standard) is the analytical standard of KU-57788 (HY-11006). This product is intended for research and analytical applications. KU-57788 (NU7441) is a highly potent and selective DNA-PK inhibitor with an IC50 of 14 nM. KU-57788 is an NHEJ pathway inhibitor. KU-57788 also inhibits PI3K and mTOR with IC50s of 5.0 and 1.7 μM, respectively.
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PI-103 Hydrochloride (Standard)
0 ImagesCat. No.: HY-10115ARCAS No.: 371935-79-4PI-103 (Hydrochloride) (Standard) is the analytical standard of PI-103 (Hydrochloride). This product is intended for research and analytical applications. PI-103 Hydrochloride is a dual PI3K and mTOR inhibitor with IC50s of 8 nM, 88 nM, 48 nM, 150 nM, 20 nM, and 83 nM for p110α, p110β, p110δ, p110γ, mTORC1, and mTORC2. PI-103 Hydrochloride also inhibits DNA-PK with an IC50 of 2 nM. PI-103 Hydrochloride induces autophagy.
