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Phospho-Chk1 (Ser317) Antibody
synthetic phosphopeptide corresponding to residues surrounding Ser317 of human Chk1
W
Rabbit
详见说明书
大量
详见MSDS文件
CST
H,R,Mk,Mi
2
-20°c
40 ul (4 western blots)/100 ul (10 western blots)/300 ul (30 western blots)/carrier free & custom formulation / quantity
规格: | 产品价格: | ¥请询价 | |
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规格: | 40 ul (4 western blots) | 产品价格: | ¥请询价 |
规格: | 100 ul (10 western blots) | 产品价格: | ¥请询价 |
规格: | 300 ul (30 western blots) | 产品价格: | ¥请询价 |
规格: | carrier free & custom formulation / quantity | 产品价格: | ¥请询价 |
pathway more info application references datasheet PDF MSDS PDF protocols
Applications Key: W=Western Blotting
Reactivity Key: H=Human R=Rat Mk=Monkey Mi=Mink
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Applications | Reactivity | Sensitivity | MW (kDa) | Source |
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W | H R Mk Mi | Endogenous | 56 | Rabbit |
Protocols |
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Specificity / Sensitivity | Phospho-Chk1 (Ser317) Antibody detects endogenous levels of Chk1 only when phosphorylated at Ser317. The antibody does not recognize Chk1 phosphorylated at other sites. |
Source / Purification | Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser317 of human Chk1. Antibodies are purified by protein A and peptide affinity chromatography. |
Background | Chk1 kinase acts downstream of ATM/ATR kinase and plays an important role in DNA damage checkpoint control, embryonic development, and tumor suppression (1). Activation of Chk1 involves phosphorylation at Ser317 and Ser345 and occurs in response to blocked DNA replication and certain forms of genotoxic stress (2). While phosphorylation at Ser345 serves to localize Chk1 to the nucleus following checkpoint activation (3), phosphorylation at Ser317 along with site-specific phosphorylation of PTEN allows for reentry into the cell cycle following stalled DNA replication (4). Chk1 exerts its checkpoint mechanism on the cell cycle, in part, by regulating the cdc25 family of phosphatases. Chk1 phosphorylation of cdc25A targets it for proteolysis and inhibits its activity through 14-3-3 binding (5). Activated Chk1 can inactivate cdc25C via phosphorylation at Ser216, blocking the activation of cdc2 and transition into mitosis (6). Centrosomal Chk1 has been shown to phosphorylate cdc25B and inhibit its activation of CDK1-cyclin B1, thereby abrogating mitotic spindle formation and chromatin condensation (7). Furthermore, Chk1 plays a role in spindle checkpoint function through regulation of Aurora B and BubR1 (8). Chk1 has emerged as a drug target for cancer therapy as its inhibition leads to cell death in many cancer cell lines (9).
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Application References |
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Companion Products |
For Research Use Only. Not For Use In Diagnostic Procedures. |
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