84-6250-61　Chek1 (Center) 200ul　378439

特徴

• Required for checkpoint mediated cell cycle arrest in response to DNA damage or the presence of unreplicated DNA.
• May also negatively regulate cell cycle progression during unperturbed cell cycles.
• Recognizes the substrate consensus sequence [R-X-X-S/T].
• Binds to and phosphorylates CDC25A, CDC25B and CDC25C.
• Phosphorylation of CDC25A at 'Ser-171' and 'Thr-497' and phosphorylation of CDC25C creates binding sites for 14-3-3 proteins which inhibit CDC25A and CDC25C.
• Phosphorylation of CDC25A at 'Ser-74', 'Ser-122', 'Ser-171', 'Ser-271' and 'Ser-284' promotes proteolysis of CDC25A.
• Inhibition of CDC25 activity leads to increased inhibitory tyrosine phosphorylation of CDK-cyclin complexes and blocks cell cycle progression.
• Binds to and phosphorylates RAD51 at 'Thr-309', which may enhance the association of RAD51 with chromatin and promote DNA repair by homologous recombination.
• Binds to and phosphorylates TLK1 at 'Ser-743', which prevents the TLK1-dependent phosphorylation of the chromatin assembly factor ASF1A.
• This may affect chromatin assembly during S phase or DNA repair.
• May also phosphorylate multiple sites within the C-terminal of TP53, which promotes activation of TP53 by acetylation and enhances suppression of cellular proliferation (By similarity).
• Essential for early embryogenesis.
• Applications:Suitable for use in Western Blot.
• Other applications not tested.
• Recommended Dilution:Western Blot: 1:1000 Optimal dilutions to be determined by the researcher.
• Storage and Stability:May be stored at 4°C for short-term only.
• Aliquot to avoid repeated freezing and thawing.
• Store at -20°C.
• Aliquots are stable for 12 months after receipt.
• For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.