Chk1 (CHEK1) pSer296 Rabbit Polyclonal Antibody

Specifications

Product Data
Applications	IHC, WB
Recommend Dilution	Western blot: 1:500~1:1000. Immunohistochemistry on paraffin sections: 1:50~1:100.
Reactivity	Human
Host	Rabbit
Clonality	Polyclonal
Immunogen	Peptide sequence around phosphorylation site of Serine 296(I-F-S(p)-N-L) derived from Human Chk1 (KLH-conjugated)
Specificity	The antibody detects endogenous levels of Chk1 only when phosphorylated at serine 296.
Formulation	Rabbit IgG in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol State: Aff - Purified State: Liquid Ig fraction
Concentration	lot specific
Purification	Affinity chromatography using epitope-specific peptide
Conjugation	Unconjugated
Storage Condition	Upon receipt, store undiluted (in aliquots) at -20°C. Avoid repeated freezing and thawing.
Predicted Protein Size	45 kDa
Gene Name	checkpoint kinase 1
Database Link	Entrez Gene 1111 Human UniProt ID O14757
Background	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-178' and 'Thr-507' and phosphorylation of CDC25C at 'Ser-216' creates binding sites for 14-3-3 proteins which inhibit CDC25A and CDC25C. Phosphorylation of CDC25A at 'Ser-76', 'Ser-124', 'Ser-178', 'Ser-279' and 'Ser-293' 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-terminus of TP53, which promotes activation of TP53 by acetylation and enhances suppression of cellular proliferation.
Synonyms	CHEK1, CHEK-1
Reference Data

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