Chk2 Antibody (YA504)
(Synonyms: CDS1, CHK2, RAD53, CHEK2, Serine/threonine-protein kinase Chk2, CHK2 checkpoint homolog, Cds1 homolog, Checkpoint kinase 2, Hucds1, hCds1)Based on 1 publication(s) in Google Scholar
Chk2 Antibody (YA504) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to Chk2.
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Host:
Rabbit
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Isotype:
IgG
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Application:
WB, ICC/IF, IHC-P, IP
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Reactivity :
Human
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Formulation:
Supplied in 1*TBS (pH7.4), 0.05% BSA and 40% Glycerol. Preservative: 0.05% Sodium Azide.
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Conjugation:
Non-conjugated
Publications Citing Use of MedChemExpress (MCE) Chk2 Antibody (YA504)
More
Applications
| Application |
WB
WB: Western Blot
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ICC/IF
ICC/IF: Immunocytochemistry/
Immunofluorescence |
IHC-P
IHC-P: Immunohistochemistry-Paraffin
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IP
IP: Immunoprecipitation
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| Dilution Ratio | 1:1000-1:2000 | 1:50-1:200 | 1:50-1:200 | Use at an assay dependent concentration. |
Product Details
Chk2 Antibody (YA504) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to Chk2.
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Host Rabbit
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Clonality Recombinant,Monoclonal
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Species ReactivityHuman
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Observed Molecular WeightObserved band size: 61 kDaNote: 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: 61 kDa
Synthetic peptide corresponding to Human Chk2.AA range:10-200.
Endogenous
Protein A affinity purified.
Non-conjugated
Unmodified
IgG
Product Properties
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Appearance
Solution
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Formulation
Supplied in 1*TBS (pH7.4), 0.05% BSA and 40% Glycerol. Preservative: 0.05% Sodium Azide.
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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.
Publications (1)
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Journal Impact Factor
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Most Recent
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Adv Sci (Weinh)
DMAP1 Deficiency Suppresses Lung Cancer Progression by Destabilizing Replication Fork and Activating IFN Signaling-Mediated Anti-tumor Immunity. [Abstract]2026 Jun;13(33):e17634. PMID: 41904944
Verification Images
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Western blot analysis was performed on protein extracts (25 μg) from Hela (lane 2), DU145 (lane 3), A549 (lane 4), HCT 116 (lane 5), and K562 (lane 6) using Chk2 antibody. Proteins were transferred onto a 0.45 μm PVDF membrane using the Trans-Blot® Turbo™ system for 13 min. The membrane was then blocked with 5% nonfat milk in TBST (HY-K1025) for 1 h at room temperature. The primary antibody (1:1000) and loading control antibody GAPDH Antibody (HRP) (HY-P80954A) (1:5000) were diluted in 5% nonfat milk in TBST and incubated with the membrane overnight at 4°C. After washing, the membrane of primary antibody was incubated with HRP-conjugated goat anti-rabbit/mouse IgG secondary antibody (HY-P8001/HY-P8004) (1:5000) diluted in 5% nonfat milk in TBST for 1 h at room temperature. Protein bands were visualized using an Ultra High Sensitivity ECL detection kit (HY-K1005).
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Western blot analysis of extracts from Hela(lane 2(20μg) or lane 3(40μg)) and MCF-7(lane 4(20μg) or lane 5(40μg)), using Chk2 (HY-P80083) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% BSA in TBST for 2 hour at room temperature. The primary antibody (HY-P80083, 1/1000) and Loading control antibody (GAPDH, HY-P80954, 1/3000) was used in 5% BSA in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (HY-P8004/HY-P8001, 1/10,000) was used for 1 hour at room temperature. -
Immunohistochemical analysis of paraffin-embedded human colon camcer using Chk2 antibody. The section was pre-treated using heat mediated antigen retrieval with EDTA (pH 9.0) for 14 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with TBST, and then probed with the primary antibody (HY-P80083, 1/200) for 30 minutes at room temperature. The detection was performed using Polymer HRP-conjugated Goat Anti-Mouse/Rabbit lgG(H&L) secondary antibody (HY-P83652). DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Immunohistochemical analysis of paraffin-embedded human ovarian camcer using Chk2 antibody. The section was pre-treated using heat mediated antigen retrieval with EDTA (pH 9.0) for 14 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with TBST, and then probed with the primary antibody (HY-P80083, 1/200) for 30 minutes at room temperature. The detection was performed using Polymer HRP-conjugated Goat Anti-Mouse/Rabbit lgG(H&L) secondary antibody (HY-P83652). DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Immunohistochemical analysis of paraffin-embedded human bladder camcer using Chk2 antibody. The section was pre-treated using heat mediated antigen retrieval with EDTA (pH 9.0) for 14 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with TBST, and then probed with the primary antibody (HY-P80083, 1/200) for 30 minutes at room temperature. The detection was performed using Polymer HRP-conjugated Goat Anti-Mouse/Rabbit lgG(H&L) secondary antibody (HY-P83652). DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Immunohistochemical analysis of paraffin-embedded human liver camcer using Chk2 antibody. The section was pre-treated using heat mediated antigen retrieval with EDTA (pH 9.0) for 14 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with TBST, and then probed with the primary antibody (HY-P80083, 1/200) for 30 minutes at room temperature. The detection was performed using Polymer HRP-conjugated Goat Anti-Mouse/Rabbit lgG(H&L) secondary antibody (HY-P83652). DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Immunohistochemical analysis of paraffin-embedded human prostate camcer using Chk2 antibody. The section was pre-treated using heat mediated antigen retrieval with EDTA (pH 9.0) for 14 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with TBST, and then probed with the primary antibody (HY-P80083, 1/200) for 30 minutes at room temperature. The detection was performed using Polymer HRP-conjugated Goat Anti-Mouse/Rabbit lgG(H&L) secondary antibody (HY-P83652). DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Immunohistochemical analysis of paraffin-embedded human thyroid camcer using Chk2 antibody. The section was pre-treated using heat mediated antigen retrieval with EDTA (pH 9.0) for 14 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with TBST, and then probed with the primary antibody (HY-P80083, 1/200) for 30 minutes at room temperature. The detection was performed using Polymer HRP-conjugated Goat Anti-Mouse/Rabbit lgG(H&L) secondary antibody (HY-P83652). DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Immunohistochemical analysis of paraffin-embedded human tonsil using Chk2 antibody. The section was pre-treated using heat mediated antigen retrieval with EDTA (pH 9.0) for 14 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with TBST, and then probed with the primary antibody (HY-P80083, 1/200) for 30 minutes at room temperature. The detection was performed using Polymer HRP-conjugated Goat Anti-Mouse/Rabbit lgG(H&L) secondary antibody (HY-P83652). DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Immunocytochemistry analysis of Hela cells labeling Chk2 with Chk2 Antibody (HY-P80083) at 1:50 dilution. Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 in PBS for 15 minutes at room temperature, then blocked with quick block buffer for 10 minutes at room temperature. Cells were then incubated with Chk2 Antibody (HY-P80083) at 1:50 dilution in quick block buffer overnight at 4 ℃. AF488-conjugated Goat Anti-Rabbit IgG H&L(HY-P8002, Green) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue).
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Immunocytochemistry analysis of HT29 cells labeling Chk2 with Chk2 Antibody (HY-P80083) at 1:50 dilution. Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 in PBS for 15 minutes at room temperature, then blocked with quick block buffer for 10 minutes at room temperature. Cells were then incubated with Chk2 Antibody (HY-P80083) at 1:50 dilution in quick block buffer overnight at 4 ℃. AF488-conjugated Goat Anti-Rabbit IgG H&L(HY-P8002, Green) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue).
Background
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Function
Serine/threonine-protein kinase which is required for checkpoint-mediated cell cycle arrest, activation of DNA repair and apoptosis in response to the presence of DNA double-strand breaks. May also negatively regulate cell cycle progression during unperturbed cell cycles. Following activation, phosphorylates numerous effectors preferentially at the consensus sequence [L-X-R-X-X-S/T] (PubMed:37943659). Regulates cell cycle checkpoint arrest through phosphorylation of CDC25A, CDC25B and CDC25C, inhibiting their activity. Inhibition of CDC25 phosphatase activity leads to increased inhibitory tyrosine phosphorylation of CDK-cyclin complexes and blocks cell cycle progression. May also phosphorylate NEK6 which is involved in G2/M cell cycle arrest. Regulates DNA repair through phosphorylation of BRCA2, enhancing the association of RAD51 with chromatin which promotes DNA repair by homologous recombination. Also stimulates the transcription of genes involved in DNA repair (including BRCA2) through the phosphorylation and activation of the transcription factor FOXM1. Regulates apoptosis through the phosphorylation of p53/TP53, MDM4 and PML. Phosphorylation of p53/TP53 at 'Ser-20' by CHEK2 may alleviate inhibition by MDM2, leading to accumulation of active p53/TP53. Phosphorylation of MDM4 may also reduce degradation of p53/TP53. Also controls the transcription of pro-apoptotic genes through phosphorylation of the transcription factor E2F1. Tumor suppressor, it may also have a DNA damage-independent function in mitotic spindle assembly by phosphorylating BRCA1. Its absence may be a cause of the chromosomal instability observed in some cancer cells. Promotes the CCAR2-SIRT1 association and is required for CCAR2-mediated SIRT1 inhibition (PubMed:25361978). Under oxidative stress, promotes ATG7 ubiquitination by phosphorylating the E3 ubiquitin ligase TRIM32 at 'Ser-55' leading to positive regulation of the autophagosme assembly (PubMed:37943659); (Microbial infection) Phosphorylates herpes simplex virus 1/HHV-1 protein ICP0 and thus activates its SUMO-targeted ubiquitin ligase activity
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Subcellular Localization
Nucleus; Nucleus; Nucleus; Nucleus; Nucleus; Nucleus, PML body; Nucleus, nucleoplasm
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Expression
Tissue_specificity:This gene is highly expressed in the testes, spleen, colon, and peripheral blood leukocytes, but lowly expressed in other tissues. -
Isoforms & Post-Translational Modification
O96017 has 13 isomers: O96017-1: 60915 Da (predicted); O96017-2: 26084 Da (predicted); O96017-3: 17370 Da (predicted); O96017-4: 50203 Da (predicted); O96017-5: 22594 Da (predicted); O96017-6: 18706 Da (predicted); O96017-7: 38125 Da (predicted); O96017-8: 32142 Da (predicted); O96017-9: 65419 Da (predicted); O96017-10: 15420 Da (predicted); O96017-11: 24396 Da (predicted); O96017-12: 57526 Da (predicted); O96017-13: 36157 Da (predicted).
Phosphorylated. Phosphorylated at Ser-73 by PLK3 in response to DNA damage, promoting phosphorylation at Thr-68 by ATM and the G2/M transition checkpoint. Phosphorylation at Thr-68 induces homodimerization. Autophosphorylates at Thr-383 and Thr-387 in the T-loop/activation segment upon dimerization to become fully active and phosphorylate its substrates like for instance CDC25C. DNA damage-induced autophosphorylation at Ser-379 induces CUL1-mediated ubiquitination and regulates the pro-apoptotic function. Phosphorylation at Ser-456 also regulates ubiquitination. Phosphorylated by PLK4;Ubiquitinated. CUL1-mediated ubiquitination regulates the pro-apoptotic function. Ubiquitination may also regulate protein stability. Ubiquitinated by RNF8 via 'Lys-48'-linked ubiquitination -
Subunit
Homodimer. Homodimerization is part of the activation process but the dimer may dissociate following activation. Interacts with PML. Interacts with TP53. Interacts with RB1; phosphorylates RB1. Interacts with BRCA1. Interacts (phosphorylated at Thr-68) with MDC1; requires ATM-mediated phosphorylation of CHEK2. Interacts with TP53BP1; modulates CHEK2 phosphorylation at Thr-68 in response to ionizing radiation. Interacts with CDC25A; phosphorylates CDC25A and mediates its degradation in response to ionizing radiation. Interacts with CUL1; mediates CHEK2 ubiquitination and regulation. Interacts with CDKN2AIP. Interacts (via protein kinase domain) with CCAR2 (via N-terminus). Interacts with SIRT1
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SwissProt ID
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Synonyms
CDS1, CHK2, RAD53, CHEK2, Serine/threonine-protein kinase Chk2, CHK2 checkpoint homolog, Cds1 homolog, Checkpoint kinase 2, Hucds1, hCds1
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Research Field
Epigenetics and Nuclear Signaling
Documentation
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Data Sheet (235 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)