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描述 产品目录编号 14-741 商名 - Upstate
描述 CHK2 (I157T), active 概述 Serine/threonine-protein kinase which is required for checkpoint-mediated cell cycle arrest, activation of DNA repair and apoptosis in response to the presence of DNA double-strand breaks. May also negatively regulate cell cycle progression during unperturbed cell cycles. Following activation, phosphorylates numerous effectors preferentially at the consensus sequence [L-X-R-X-X-S/T]. Regulates cell cycle checkpoint arrest through
phosphorylation of CDC25A, CDC25B and CDC25C, inhibiting their activity. Inhibition of CDC25 phosphatase activity leads to increased inhibitory tyrosine phosphorylation of CDK-cyclin complexes and blocks cell cycle progression. May also phosphorylate NEK6 which is involved in G2/M cell cycle arrest. Regulates DNA repair through phosphorylation of BRCA2, enhancing the association of RAD51 with chromatin which promotes DNA repair by homologous recombination. Also stimulates the transcription of genes involved in DNA repair (including BRCA2) through the phosphorylation and activation of the transcription factor FOXM1. Regulates apoptosis through the phosphorylation of p53/TP53, MDM4 and PML. Phosphorylation of p53/TP53 at 'Ser-20' by CHEK2 may alleviate inhibition by MDM2, leading to accumulation of active p53/TP53. Phosphorylation of MDM4 may also reduce degradation of p53/TP53. Also controls the transcription of pro-apoptotic genes through phosphorylation of the transcription factor E2F1. Tumor suppressor, it may also have a DNA damage-independent function in mitotic spindle assembly by phosphorylating BRCA1. Its absence may be a cause of the chromosomal instability observed in some cancer cells产品信息 演示 Protein in in 50mM Tris/HCl pH7.5, 300mM NaCl, 0.1mM EGTA, 0.03% Brij-35, 270mM sucrose, 1mM benzamidine, 0.2mM PMSF, 0.1% 2-mercaptoethanol. Frozen solution. 应用 主要应用 - Kinase Assay
生物信息 来源 N-terminal GST and C-terminal 6His-tagged,.recombinant human CHK2, residues 5 - end, containing the I157T mutation. Expressed in E. coli cells 品种 Human 特异活性 For Specific Activity data, refer to the Certificate of Analysis for individual lots of this enzyme. Entrez基因编号 - NM_007194
基因符号 - LFS2
- CHEK2
- CHK2
- RAD53
- CDS1
蛋白靶 CHK2 纯化方法 Purified using glutathione-agarose and Ni2+/NTA-agarose. 靶子系列 CAMK UniProt编号 - O96017
产品使用声明 质量保证 Routinely evaluated by phosphorylation of CHKtide (KKKVSRSGLYRSPSMPENLNRPR) 使用声明 - Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
储存和货运信息 存储条件 12 months at -70°C 包装信息 数量 10 µg 包装 Also available in 250μg size as catalog # 14-741M and in bulk as catalog # 14-741-K.
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