Knockout Tested Rabbit Recombinant Monoclonal Chk2 antibody. Carrier free. Suitable for IP, WB, IHC-P, ICC/IF, Flow Cyt (Intra) and reacts with Human samples.
pH: 7.2 - 7.4
Constituents: PBS
IP | WB | IHC-P | ICC/IF | Flow Cyt (Intra) | |
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Human | Expected | Tested | Expected | Expected | Expected |
Species | Dilution info | Notes |
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Species Human | Dilution info Use at an assay dependent concentration. | Notes - |
Species | Dilution info | Notes |
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Species Human | Dilution info - | Notes - |
Species | Dilution info | Notes |
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Species Human | Dilution info - | Notes Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol. |
Species | Dilution info | Notes |
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Species Human | Dilution info Use at an assay dependent concentration. | Notes - |
Species | Dilution info | Notes |
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Species Human | Dilution info Use at an assay dependent concentration. | Notes - |
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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.
CDS1, CHK2, RAD53, CHEK2, Serine/threonine-protein kinase Chk2, CHK2 checkpoint homolog, Cds1 homolog, Checkpoint kinase 2, Hucds1, hCds1
Knockout Tested Rabbit Recombinant Monoclonal Chk2 antibody. Carrier free. Suitable for IP, WB, IHC-P, ICC/IF, Flow Cyt (Intra) and reacts with Human samples.
pH: 7.2 - 7.4
Constituents: PBS
ab251477 is the carrier-free version of Anti-Chk2 antibody [EPR19482] ab207446.
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.
This product is a recombinant monoclonal antibody, which offers several advantages including:
For more information, read more on recombinant antibodies.
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. The carrier-free buffer and high concentration allow for increased conjugation efficiency.
This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.
Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.
We have tested this species and application combination and it works. It is covered by our product promise.
We have not tested this specific species and application combination in-house, but expect it will work. It is covered by our product promise.
This species and application combination has not been tested, but we predict it will work based on strong homology. However, this combination is not covered by our product promise.
We do not recommend this combination. It is not covered by our product promise.
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In the unlikely event of one of our products not working as expected, you are covered by our product promise.
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This data was developed using the same antibody clone in a different buffer formulation (Anti-Chk2 antibody [EPR19482] ab207446).
Lanes 1-4: Merged signal (red and green). Green - Anti-Chk2 antibody [EPR19482] ab207446 observed at 68 kDa. Red - loading control Anti-GAPDH antibody [6C5] - Loading Control ab8245 observed at 37 kDa.
Anti-Chk2 antibody [EPR19482] ab207446 Anti-Chk2 antibody [EPR19482] was shown to specifically react with Chk2 in wild-type HeLa cells. Loss of signal was observed when knockout cell line Human CHEK2 (Chk2) knockout HeLa cell line ab264815 (knockout cell lysate Human CHEK2 (Chk2) knockout HeLa cell lysate ab257104) was used. Wild-type and Chk2 knockout samples were subjected to SDS-PAGE. Anti-Chk2 antibody [EPR19482] ab207446 and Anti-alpha Tubulin antibody [EP1332Y] - Microtubule Marker (Anti-alpha Tubulin antibody [EP1332Y] - Loading Control ab52866) were incubated overnight at 4°C at 1 in 1000 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.
All lanes: Western blot - Anti-Chk2 antibody [EPR19482] (Anti-Chk2 antibody [EPR19482] ab207446) at 1/1000 dilution
Lane 1: Wild-type HeLa cell lysate at 20 µg
Lane 2: CHEK2 knockout HeLa cell lysate at 20 µg
Lane 2: Western blot - Human CHEK2 (Chk2) knockout HeLa cell line (Human CHEK2 (Chk2) knockout HeLa cell line ab264815)
Lane 3: HEK-293 cell lysate at 20 µg
Lane 4: MDA-MB-231 cell lysate at 20 µg
All lanes: Western blot - Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed ab216773) at 1/20000 dilution
Performed under reducing conditions.
Predicted band size: 61 kDa
Observed band size: 68 kDa
This data was developed using the same antibody clone in a different buffer formulation (Anti-Chk2 antibody [EPR19482] ab207446).
False colour image of Western blot: Anti-Chk2 antibody [EPR19482] staining at 1/1000 dilution, shown in green; Mouse anti-GAPDH antibody [6C5] (Anti-GAPDH antibody [6C5] - Loading Control ab8245) loading control staining at 1/20000 dilution, shown in red. In Western blot, Anti-Chk2 antibody [EPR19482] ab207446 was shown to bind specifically to Chk2. A band was observed at 67 kDa in wild-type A549 cell lysates with no signal observed at this size in CHEK2 knockout cell line Human CHEK2 (Chk2) knockout A549 cell line ab276098 (knockout cell lysate Human CHEK2 (Chk2) knockout A549 cell line ab276098).
To generate this image, wild-type and CHEK2 knockout A549 cell lysates were analysed. First, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 3 % milk in TBS-0.1 % Tween® 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Goat anti-Rabbit IgG H&L 800CW and Goat anti-Mouse IgG H&L 680RD at 1/20000 dilution.
Lanes 1 - 4: Western blot - Anti-Chk2 antibody [EPR19482] (Anti-Chk2 antibody [EPR19482] ab207446) at 1/1000 dilution
Lanes 1 - 4: Western blot - Anti-Chk2 antibody [EPR19482] - BSA and Azide free (ab251477) at 1/1000 dilution
Lane 1: Wild-type A549 cell lysate at 20 µg
Lane 2: Western blot - Human CHEK2 (Chk2) knockout A549 cell line (Human CHEK2 (Chk2) knockout A549 cell line ab276098)
Lane 2: CHEK2 knockout A549 cell lysate at 20 µg
Lane 3: HEK-293 cell lysate at 20 µg
Lane 4: MDA-MB-231 cell lysate at 20 µg
All lanes: Goat anti-Rabbit IgG H&L 800CW and Goat anti-Mouse IgG H&L 680RD at 1/20000 dilution
Performed under reducing conditions.
Observed band size: 67 kDa
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