Phospho-Chk1 (Ser317) Antibody (YA7581)
(Synonyms: CHK1, CHEK1, Serine/threonine-protein kinase Chk1, CHK1 checkpoint homolog, Cell cycle checkpoint kinase, Checkpoint kinase-1)
Based on 1 Customer Validation
Phospho-Chk1 (Ser317) Antibody (YA7581) is a Rabbit-derived and non-conjugated IgG, Kappa monoclonal antibody, targeting to Phospho-Chk1 (Ser317).
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Host:
Rabbit
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Isotype:
IgG
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Application:
WB, IHC-P, ICC/IF, IP, ELISA
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Reactivity :
Human, Mouse, Rat
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Formulation:
Supplied in PBS (pH7.4) containing 50% glycerol, 0.05% Proclin 300, 0.05%BSA
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Conjugation:
Non-conjugated
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
Applications
| Application |
IHC-P
IHC-P: Immunohistochemistry-Paraffin
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WB
WB: Western Blot
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ICC/IF
ICC/IF: Immunocytochemistry/
Immunofluorescence |
ELISA
ELISA: Enzyme Linked Immunosorbent Assay
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IP
IP: Immunoprecipitation
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|---|---|---|---|---|---|
| Dilution Ratio | 1:200-1:1000 | 1:2000-1:10000 | 1:200-1:1000 | 1:5000-1:20000 | 1:50-1:200 |
Product Details
Phospho-Chk1 (Ser317) Antibody (YA7581) is a Rabbit-derived and non-conjugated IgG, Kappa monoclonal antibody, targeting to Phospho-Chk1 (Ser317).
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Host Rabbit
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Clonality Monoclonal,Recombinant
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Species ReactivityHuman, Mouse, Rat
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Observed Molecular WeightObserved band size: 50 kDa
Note: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.
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Calculated Molecular Weight Predicted band size: 54 kDa
The exact sequence is proprietary to MCE.
Endogenous
Protein A affinity purified
Non-conjugated
Phosphorylated
IgG
Product Properties
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Appearance
Solution
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Formulation
Supplied in PBS (pH7.4) containing 50% glycerol, 0.05% Proclin 300, 0.05%BSA
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Concentration
Batch-dependent, Please check the COA for the concentration of each lot. Check Lot Concentration
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Storage & Stability
Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.
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Shipping
Shipping with blue ice.
Background
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Function
Chk1 (checkpoint kinase 1) mediates the DNA damage response and normal cell-cycle regulation through checkpoint activation, cell-cycle arrest, DNA repair, and cell death control[1]. Mechanistically, Chk1 functions as a key transducer in genome-integrity checkpoints, especially within ATR-linked responses to stalled replication and genotoxic stress[2][3]. In cancer research, this role makes Chk1 relevant to replication stress, BRCA wild-type ovarian cancer models, and studies combining checkpoint inhibition with DNA-damaging therapy[4][5]. Compared with Chk2, Chk1 shows distinct activation biology and experimentally separable checkpoint functions, while Chk1-S acts as an endogenous splice-variant inhibitor that regulates Chk1-dependent checkpoints[2][6]. For experimental applications, Chk1 inhibitors such as prexasertib/LY2606368 induce replication catastrophe and have been tested in tumor models and recurrent high-grade serous ovarian cancer[7][8].
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Subcellular Localization
Nucleus,Chromosome,Cytoplasm,Cytoplasm, cytoskeleton, microtubule organizing center, centrosome
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Expression
Tissue_Specificity: Expressed ubiquitously with the most abundant expression in thymus, testis, small intestine and colon -
Isoforms & Post-Translational Modification
O14757 has three isomers: O14757-1: 54434 Da (predicted); O14757-2: 43703 Da (predicted); O14757-3: 50415 Da (predicted).
Phosphorylated by ATR in a RAD17-dependent manner in response to ultraviolet irradiation and inhibition of DNA replication (PubMed:10859164, PubMed:11390642, PubMed:12446774, PubMed:12588868, PubMed:12676583, PubMed:12676925, PubMed:12676962, PubMed:14681223, PubMed:14988723, PubMed:15650047, PubMed:15707391, PubMed:15870257, PubMed:25083873, PubMed:31316063)丨Ubiquitinated丨Proteolytically cleaved at the C-terminus by SPRTN during normal DNA replication, thereby promoting CHEK1 removal from chromatin and activating the protein kinase activity -
Subunit
Interacts (phosphorylated by ATR) with RAD51 (PubMed:15665856)
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SwissProt ID
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Synonyms
CHK1, CHEK1, Serine/threonine-protein kinase Chk1, CHK1 checkpoint homolog, Cell cycle checkpoint kinase, Checkpoint kinase-1
Documentation
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Data Sheet (261 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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User Guide for Antibodies (1077 KB)
References
[1]. Patil M, et al. Checkpoint kinase 1 in DNA damage response and cell cycle regulation. Cell Mol Life Sci. 2013 Nov;70(21):4009-21. [Content Brief]
[2]. Bartek J, et al. Chk1 and Chk2 kinases in checkpoint control and cancer. Cancer Cell. 2003 May;3(5):421-9. [Content Brief]
[3]. Dai Y, et al. New insights into checkpoint kinase 1 in the DNA damage response signaling network. Clin Cancer Res. 2010 Jan 15;16(2):376-83. [Content Brief]
[4]. Rabezanahary H, et al. Live virus neutralizing antibodies against pre and post Omicron strains in food and retail workers in Québec, Canada. Heliyon. 2024 May 21;10(10):e31026. [Content Brief]
[5]. Nair J, et al. Resistance to the CHK1 inhibitor prexasertib involves functionally distinct CHK1 activities in BRCA wild-type ovarian cancer. Oncogene. 2020 Aug;39(33):5520-5535. [Content Brief]
[6]. Pabla N, et al. Checkpoint kinase 1 (Chk1)-short is a splice variant and endogenous inhibitor of Chk1 that regulates cell cycle and DNA damage checkpoints. Proc Natl Acad Sci U S A. 2012 Jan 3;109(1):197-202. [Content Brief]
[7]. King C, et al. LY2606368 Causes Replication Catastrophe and Antitumor Effects through CHK1-Dependent Mechanisms. Mol Cancer Ther. 2015 Sep;14(9):2004-13. [Content Brief]
[8]. Lee JM, et al. Prexasertib, a cell cycle checkpoint kinase 1 and 2 inhibitor, in BRCA wild-type recurrent high-grade serous ovarian cancer: a first-in-class proof-of-concept phase 2 study. Lancet Oncol. 2018 Feb;19(2):207-215. [Content Brief]
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