Online Inquiry
Phospho-Chk1 (Ser317) Antibody
SPA-02190
| Size | Price |
| 25 µg | Online Inquiry |
| 100 µg | Online Inquiry |
| More Options | Online Inquiry |
| Target Information | |
|---|---|
| Target Name | Chk1 |
| Gene Abbr. | CHEK1 |
| Gene ID | 1111 |
| Full Name | checkpoint kinase 1 |
| Alias | CHK1 |
| Introduction | Chk1 kinase acts downstream of ATM/ATR kinase and plays an important role in DNA damage checkpoint control, embryonic development, and tumor suppression. Activation of Chk1 involves phosphorylation at Ser317 and Ser345 by ATM/ATR, followed by autophosphorylation of Ser296. Activation occurs in response to blocked DNA replication and certain forms of genotoxic stress. While phosphorylation at Ser345 serves to localize Chk1 to the nucleus following checkpoint activation phosphorylation at Ser317 along with site-specific phosphorylation of PTEN allows for re-entry into the cell cycle following stalled DNA replication. 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. Activated Chk1 can inactivate cdc25C via phosphorylation at Ser216, blocking the activation of cdc2 and transition into mitosis. Centrosomal Chk1 has been shown to phosphorylate cdc25B and inhibit its activation of CDK1-cyclin B1, thereby abrogating mitotic spindle formation and chromatin condensation. Furthermore, Chk1 plays a role in spindle checkpoint function through regulation of aurora B and BubR1. Research studies have implicated Chk1 as a drug target for cancer therapy as its inhibition leads to cell death in many cancer cell lines. |
| Product Details | |
|---|---|
| Host | Rabbit |
| Clonality | Monoclonal |
| Clone No. | D7H2 |
| Immunogen | Synthetic peptide corresponding to residues surrounding Ser317 of human Chk1 protein. |
| Source/Purification | Antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ser317 of human Chk1 protein. |
| Usage | |
|---|---|
| Application | WB |
| Dilutions | Western Blot (1:1000) |
| MW(KDa) | 56 |
| Reactivity | Human |
| Sensitivity | Endogenous |
| Specificity | It recognizes endogenous levels of Chk1 protein only when phosphorylated at Ser317. |
| Storage & Handling | |
|---|---|
| Storage Buffer | Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/mL BSA, 50% glycerol and less than 0.02% sodium azide. |
| Preservative | Less than 0.02% Sodium Azide |
| Storage Temp. | Store at -20 °C. |
| Handling | Do not aliquot the antibody. |
For research use only. Not intended for any clinical use. No products from CD BioSciences may be resold, modified for resale or used to manufacture commercial products without prior written approval from CD BioSciences.