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Ku70 is an evolutionarily conserved protein that has functions in DNA repair and maintenance. It is a heterodimeric protein made up of Ku70 and Ku80. Ku70 is a DNA repair subunit protein that binds to DNA double-strand break ends and helps repair DNA via the non-homologous end-joining (NHEJ) pathway (Mimori et al., 1986). From: International Review of Cell and Molecular Biology, 2019 Ku-core domain, Ku70 subfamily; Ku70 is a subunit of the Ku protein, which plays a key role in multiple nuclear processes such as DNA repair, chromosome maintenance, transcription regulation, and V(D)J recombination. Ku70 is required for late B cell development and immunoglobulin heavy chain class switching Immunoglobulin (Ig) heavy chain (HC) class switch recombination (CSR) is a late B cell process that involves intrachromosomal DNA rearrangement. Eukaryotic Ku is a heterodimer of two polypeptides, Ku70 (XRCC6) and Ku80 (XRCC5), so named because the molecular weight of the human Ku proteins is around 70 kDa and 80 kDa.

Ku70

The Ku heterodimer (Ku70 and Ku80 subunits) contributes to genomic integrity through its ability to bind DNA double-strand breaks and facilitate repair by the non-homologous end-joining pathway. The crystal structure of the human Ku heterodimer was determined both alone and bound to a 55-nucleotide DNA element at 2.7 and 2.5 A resolution, respectively. ku70 tert : gl1; ku70; tert: images; None available : phenotypes ; Surovtseva YV, Shakirov EV, Vespa L, Osbun N, Song X, Shippen DE(2007) In contrast to the ku70 mutant, which undergo telomerase-dependent expansion to more than twice the normal length in a single generation, the ku70 tert double mutant displays accelerated telomere shortening and a precocious onset of genome stability. 2021-02-26 · Depletion of CBP and/or Ku70 inhibited cell growth and caused cell death. To understand the roles of CBP and Ku70 in human melanoma cells, we designed and synthesized a set of CBP siRNA and Ku70 Although the ku70 deletion strain was noted to be more sensitive to UV rays than the corresponding wild-type strain, no lethality, severe growth retardation or loss of gene copy numbers could be detected during repetitive rounds of cultivation and induction of heterologous protein production.

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When associated with KU80, binds to double-stranded telomeric and non-telomeric DNA sequences, but not to single-stranded DNA. Recognition of DNA double‐strand breaks during non‐homologous end joining is carried out by the Ku70–Ku80 protein, a 150 kDa heterodimer that recruits the DNA repair kinase DNA‐dependent protein kinase catalytic subunit (DNA‐PKcs) to the lesion. In this study, CBP was found to positively regulate the expression of Ku70, and both CBP and Ku70 were found to negatively regulate the expression of NOX2, therefore, mitigating the intracellular The Ku autoantigen is a heterodimer of 70kDa (p70) and ~80kDa (p80) proteins. The p70/p80 dimer is important for function of a 460kDa DNAdependent protein kinase that phosphorylates certain transcription factors, including Sp1, Oct-1, p53, and SV40 large T antigen in vitro. Heterodimer composed of XRCC5/Ku80 and XRCC6/Ku70.

Complex: Ku70:Ku80 complex Macromolecular complex annotations are imported from the Complex Portal.These annotations have been derived from physical molecular interaction evidence extracted from the literature and cross-referenced in the entry, or by curator inference from information on homologs in closely related species or by inference from scientific background. In vitro, Ku70 -/- mouse fibroblasts displayed an increased rate of sister chromatid exchange and a high frequency of spontaneous neoplastic transformation. In vivo, Ku70 -/- mice, known to be defective in B- but not T-lymphocyte maturation, developed thymic and disseminated T-cell lymphomas at a mean age of 6 months with CD4+/CD8+ tumor cells. Rabbit anti Ku70 antibody recognizes human Ku70, also known as XRCC6, G22P1 or X-ray repair cross-complementing protein 6.

Heterodimers of the 70 and 80 kDa Ku autoantigens (Ku70 and Ku80) activate the DNA‐dependent protein kinase (DNA‐PK). Mutations in any of the three subunits of this protein kinase (Ku70, Ku80 and DNA‐PKcs) lead to sensitivity to ionizing radiation (IR) and to DNA double‐strand breaks, and V (D)J recombination product formation defects.
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The dimer associates in a DNA-dependent manner with PRKDC to form the DNA-dependent protein kinase complex DNA-PK, and with the LIG4-XRCC4 complex to form the core of the non-homologous end joining (NHEJ) complex. 2001-03-01 Invitrogen Anti-Ku70 Recombinant Monoclonal (JM61-31), Catalog # MA5-32645. Tested in Western Blot (WB), Immunofluorescence (IF), Immunocytochemistry (ICC), Immunohistochemistry (IHC), Flow Cytometry (Flow) and Immunoprecipitation (IP) applications. This antibody reacts with Human samples. Supplied as 100 µL purified antibody (1 mg/mL).

Ku70 Antibody (MA5-32645) in WB Western blot was performed using Anti-Ku70 Recombinant Rabbit Monoclonal Antibody (JM61-31) (Product # MA5-32645) and a 70kDa band corresponding to Ku70 was observed across cell lines tested. Ku70 Antibody (PA5-27538) in WB Western blot analysis was performed on modified whole cell extracts (1% SDS) (30 µg lysate) of HeLa (Lane 1), K-562 (Lane 2), Jurkat (Lane 3), HEK293 (Lane 4) and HepG2 (Lane 5). Ku70 is a novel Mcl-1 deubiquitinase that could be a potential target for cancer therapy by manipulating Mcl-1 deubiquitination. loss of expression correlates with decreased survival in gall bladder malignancies patients SMAR1-mediated regulation of repair and apoptosis via a complex crosstalk involving Ku70, HDAC6 and Bax. Single-stranded DNA-dependent ATP-dependent helicase. Involved in DNA non-homologous end joining (NHEJ) required for double-strand break repair. When associated with KU80, binds to double-stranded telomeric and non-telomeric DNA sequences, but not to single-stranded DNA. Recognition of DNA double‐strand breaks during non‐homologous end joining is carried out by the Ku70–Ku80 protein, a 150 kDa heterodimer that recruits the DNA repair kinase DNA‐dependent protein kinase catalytic subunit (DNA‐PKcs) to the lesion. In this study, CBP was found to positively regulate the expression of Ku70, and both CBP and Ku70 were found to negatively regulate the expression of NOX2, therefore, mitigating the intracellular The Ku autoantigen is a heterodimer of 70kDa (p70) and ~80kDa (p80) proteins.
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-Ku80ヘテロ二量体と相互作用することにより非相同末端結合によるDNA 2 本鎖切断の修復を促進し，非相同末端結合にかかわるタンパク質をDNA 2本鎖 ku７０/ku８０のヘテロダイマーにDNA―PKcs が結合し、DNA―PKcs が活性化します。その後、artemis によってDNA 切断端を修飾し、ligaxe IV とXRCC４ Feb 1, 2013 Ku70 was originally described as an autoantigen, but it also functions as a DNA repair protein in the nucleus and as an antiapoptotic protein by Apr 26, 2009 for its apoptotic one, Ku70 acts as part of a heterodimer with an approximately 80 kDa protein, Ku80. In contrast to the signifi- cant amount of Feb 28, 2013 Analysis of Ku70−/− pancreatic β-cells revealed an accumulation of DNA damage and activation of p53-dependent cellular senescence similar Ku70 is a protein that, in humans, is encoded by the XRCC6 gene. Ku70 is an evolutionarily conserved protein that has functions in DNA repair and maintenance. It is a heterodimeric protein made up of Ku70 and Ku80.

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(A) The testes of Ku70 2 /and Ku70 2/ Rap1 D mice are of reduced size, as shown for wild-type (left) and Ku70 2/ (right) testes. Scale bar: 5 mm.