Overview

  • Product name

    Anti-Chk2 antibody [EPR4325] - BSA and Azide free
    See all Chk2 primary antibodies
  • Description

    Rabbit monoclonal [EPR4325] to Chk2 - BSA and Azide free
  • Host species

    Rabbit
  • Tested applications

    Suitable for: ICC/IF, Flow Cyt, IP, IHC-P, ICC, WBmore details
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Recombinant fragment aa 1-200.

  • Positive control

    • WB: HeLa (untreated and treated with gamma irradiation), HT-29, and 293T cell lysates. IHC-P: Human colon and spleen tissues. ICC/IF: Wild-type HAP1 cells.
  • General notes

    ab227998 is the carrier-free version of ab109413 This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.

     

    Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.

    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.

    Ab227998 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.

    Maxpar® is a trademark of Fluidigm Canada Inc.

    Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.

Properties

Applications

Our Abpromise guarantee covers the use of ab227998 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ICC/IF Use at an assay dependent concentration.
Flow Cyt Use at an assay dependent concentration.

ab199376 - Rabbit monoclonal IgG (Low endotoxin, Azide free), is suitable for use as an isotype control with this antibody.

 

IP Use at an assay dependent concentration.
IHC-P Use at an assay dependent concentration.

antigen retrieval is recommended.

ICC Use at an assay dependent concentration.
WB Use at an assay dependent concentration. Detects a band of approximately 62 kDa (predicted molecular weight: 61 kDa).

Target

  • Function

    Regulates cell cycle checkpoints and apoptosis in response to DNA damage, particularly to DNA double-strand breaks. Inhibits CDC25C phosphatase by phosphorylation on 'Ser-216', preventing the entry into mitosis. May also play a role in meiosis. Regulates the TP53 tumor suppressor through phosphorylation at 'Thr-18' and 'Ser-20'.
  • Tissue specificity

    High expression is found in testis, spleen, colon and peripheral blood leukocytes. Low expression is found in other tissues.
  • Involvement in disease

    Defects in CHEK2 are associated with Li-Fraumeni syndrome 2 (LFS2) [MIM:609265]; a highly penetrant familial cancer phenotype usually associated with inherited mutations in p53/TP53.
    Defects in CHEK2 may be a cause of susceptibility to prostate cancer (PC) [MIM:176807]. It is a malignancy originating in tissues of the prostate. Most prostate cancers are adenocarcinomas that develop in the acini of the prostatic ducts. Other rare histopathologic types of prostate cancer that occur in approximately 5% of patients include small cell carcinoma, mucinous carcinoma, prostatic ductal carcinoma, transitional cell carcinoma, squamous cell carcinoma, basal cell carcinoma, adenoid cystic carcinoma (basaloid), signet-ring cell carcinoma and neuroendocrine carcinoma.
    Defects in CHEK2 are found in some patients with osteogenic sarcoma (OSRC) [MIM:259500].
  • Sequence similarities

    Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. CHK2 subfamily.
    Contains 1 FHA domain.
    Contains 1 protein kinase domain.
  • Post-translational
    modifications

    Phosphorylated by PLK4.
  • Cellular localization

    Nucleus; Nucleus. Isoform 10 is present throughout the cell and Nucleus > PML body. Nucleus > nucleoplasm. Recruited into PML bodies together with TP53.
  • Information by UniProt
  • Database links

  • Alternative names

    • CDS 1 antibody
    • Cds1 antibody
    • Cds1 homolog antibody
    • Checkpoint kinase 2 antibody
    • Checkpoint like protein CHK2 antibody
    • CHEK 2 antibody
    • Chek2 antibody
    • Chk 2 antibody
    • CHK2 checkpoint homolog (S. pombe) antibody
    • CHK2 checkpoint homolog antibody
    • CHK2_HUMAN antibody
    • hCds1 antibody
    • HuCds 1 antibody
    • LFS 2 antibody
    • LFS2 antibody
    • PP1425 antibody
    • RAD 53 antibody
    • RAD53 antibody
    • Rad53 homolog antibody
    • Serine/threonine protein kinase Chk2 antibody
    • Serine/threonine-protein kinase Chk2 antibody
    see all

Images

  • Flow Cytometry analysis of HeLa (human cervix adenocarcinoma) cells labeling Chk2 with purified ab109413 at 1/230 dilution(10 µg/ml) (red). Cells were fixed with 80% methanol and permeabilised with 0.1% Tween-20. A Goat anti rabbit IgG (Alexa Fluor® 488) (ab150077) (1/2000 dilution) was used as the secondary antibody. Rabbit monoclonal IgG (Black)(ab172730) was used as the isotype control, cells without incubation with primary antibody and secondary antibody (Blue) were used as the unlabeled control.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109413).

  • ab109413 staining Chk2 in wild-type HAP1 cells (top panel) and Chk2 knockout HAP1 cells (bottom panel). The cells were fixed with 100% methanol (5 minutes), permeabilized with 0.1% Triton X-100 for 5 minutes and then blocked with 1% BSA/10% normal goat serum/0.3M glycine in 0.1% PBS-Tween for 1 hour. The cells were then incubated with ab109413 at 1/250 dilution and ab195889 at 1/250 dilution (shown in pseudo colour red) overnight at +4°C, followed by a further incubation at room temperature for 1 hour with a goat secondary antibody to Rabbit IgG (Alexa Fluor® 488) (ab150081) at 2 μg/ml (shown in green). Nuclear DNA was labelled in blue with DAPI.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109413).

  • Immunohistochemical analysis of paraffin-embedded human spleen tissue using ab109413 at a 1/100 dilution.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109413).

  • ab109413 (1/500) staining Chk2 in HeLa (human epithelial cell line from cervix adenocarcinoma) cells (green). Cells were fixed in paraformaldehyde, permeabilized with 0.5% Triton X-100/PBS and counterstained with DAPI in order to highlight the nucleus (red). For further experimental details please see Abreview.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109413).

  • This ICC data was generated using the same anti-Chk2 antibody clone, EPR4325, in a different buffer formulation (cat# ab10413).

    ab109413 staining Chk2 in wild-type HAP1 cells (top panel) and Chk2 knockout HAP1 cells (bottom panel). The cells were fixed with 100% methanol (5 minutes), permeabilized with 0.1% Triton X-100 for 5 minutes and then blocked with 1% BSA/10% normal goat serum/0.3M glycine in 0.1% PBS-Tween for 1 hour. The cells were then incubated with ab109413 at 1/250 dilution and ab195889 at 1/250 dilution (shown in pseudo colour red) overnight at +4°C, followed by a further incubation at room temperature for 1 hour with a goat secondary antibody to Rabbit IgG (Alexa Fluor® 488) (ab150081) at 2 μg/ml (shown in green). Nuclear DNA was labelled in blue with DAPI.

  • This IHC data was generated using the same anti-Chk2 antibody clone, EPR4325, in a different buffer formulation (cat# ab109413).

    Immunohistochemical analysis of paraffin-embedded human colon tissue using ab109413 at a 1/100 dilution.

References

This product has been referenced in:

  • Tu Y  et al. Ataxin-3 promotes genome integrity by stabilizing Chk1. Nucleic Acids Res 45:4532-4549 (2017). WB . Read more (PubMed: 28180282) »
  • Li WF  et al. WISP-1 contributes to fractionated irradiation-induced radioresistance in esophageal carcinoma cell lines and mice. PLoS One 9:e94751 (2014). Human . Read more (PubMed: 24728101) »
See all 4 Publications for this product

Customer reviews and Q&As

There are currently no Customer reviews or Questions for ab227998.
Please use the links above to contact us or submit feedback about this product.

Please note: All products are "FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC PROCEDURES"
For licensing inquiries, please contact partnerships@abcam.com

Sign up