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Product Name
Anti-Chk2 Rabbit antibody
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Description
Chk2 Rabbit monoclonal antibody
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Tested applications
WB, IHC-P, ICC/IF, FC, IP
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Species reactivity
Human
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Alternative names
CDS1; CHK2; LFS2; RAD53; hCds1; HuCds1; PP1425 antibody
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Isotype
Rabbit IgG
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Preparation
Antigen: Recombinant protein of human Chk2
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Clonality
Monoclonal
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Formulation
50nM Tris-Glycine(pH 7.4), 0.15M Nacl, 40%Glycerol, 0.01% sodium azide and 0.05% BSA.
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Storage instructions
Store at 4°C short term. Store at -20°C long term. Avoid freeze / thaw cycle.
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Applications
WB: 1/1000
IHC: 1/200
ICC/IF: 1/50
FC: 1/20
IP: 1/20
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Validations
Western blot detection of Chk2 in Jurkat cell lysates using Chk2 Rabbit mAb(1:500 diluted).Predicted band size:61kDa.Observed band size:61kDa.
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Background
Swiss-Prot Acc.O96017.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. Promotes the CCAR2-SIRT1 association and is required for CCAR2-mediated SIRT1 inhibition (PubMed:25361978).
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