• Immunofluorescence analysis of A549 cells using Chk2 antibody (STJ23120).
  • Immunofluorescence analysis of MCF-7 cells using Chk2 antibody (STJ23120). Blue: DAPI for nuclear staining.
  • Western blot analysis of extracts of various cell lines, using Chk2 antibody (STJ23120) at 1:500 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) (STJS000856) at 1:10000 dilution. Lysates/proteins: 25 Mu g per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Enhanced Kit. Exposure time: 60s.
  • Western blot analysis of extracts of Jurkat cells, using Chk2 antibody (STJ23120) at 1:500 dilution. Secondary antibody: HRP Goat Anti-Rabbit IgG (H+L) (STJS000856) at 1:10000 dilution. Lysates/proteins: 25 Mu g per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit. Exposure time: 30s.

Anti-CHEK2 antibody (1-220) (STJ23120)

SKU:
STJ23120

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Host: Rabbit
Applications: WB/IF
Reactivity: Human/Mouse/Rat
Note: STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS.
Short Description: Rabbit polyclonal antibody anti-Chk2 (1-220) is suitable for use in Western Blot and Immunofluorescence research applications.
Clonality: Polyclonal
Conjugation: Unconjugated
Isotype: IgG
Formulation: PBS with 0.02% Sodium Azide, 50% Glycerol, pH7.3.
Purification: Affinity purification
Dilution Range: WB 1:100-1:500
IF/ICC 1:50-1:200
Storage Instruction: Store at-20°C for up to 1 year from the date of receipt, and avoid repeat freeze-thaw cycles.
Gene Symbol: CHEK2
Gene ID: 11200
Uniprot ID: CHK2_HUMAN
Immunogen Region: 1-220
Immunogen: Recombinant fusion protein containing a sequence corresponding to amino acids 1-220 of human Chk2 (NP_009125.1).
Immunogen Sequence: MSRESDVEAQQSHGSSACSQ PHGSVTQSQGSSSQSQGISS SSTSTMPNSSQSSHSSSGTL SSLETVSTQELYSIPEDQEP EDQEPEEPTPAPWARLWALQ DGFANLECVNDNYWFGRDKS CEYCFDEPLLKRTDKYRTYS KKHFRIFREVGPKNSYIAYI EDHSGNGTFVNTELVGKGKR RPLNNNSEIALSLSRNKVFV FFDLTVDDQSVYPKALRDEY
Tissue Specificity High expression is found in testis, spleen, colon and peripheral blood leukocytes. Low expression is found in other tissues.
Post Translational Modifications 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.
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. 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. (Microbial infection) Phosphorylates herpes simplex virus 1/HHV-1 protein ICP0 and thus activates its SUMO-targeted ubiquitin ligase activity.
Protein Name Serine/Threonine-Protein Kinase Chk2
Chk2 Checkpoint Homolog
Cds1 Homolog
Hucds1
Hcds1
Checkpoint Kinase 2
Database Links Reactome: R-HSA-5693565
Reactome: R-HSA-6804756
Reactome: R-HSA-6804757
Reactome: R-HSA-6804760
Reactome: R-HSA-69473
Reactome: R-HSA-69541
Reactome: R-HSA-69601
Reactome: R-HSA-75035
Cellular Localisation Isoform 2: Nucleus
Isoform 10 Is Present Throughout The Cell
Isoform 4: Nucleus
Isoform 7: Nucleus
Isoform 9: Nucleus
Isoform 12: Nucleus
Nucleus
Pml Body
Nucleoplasm
Recruited Into Pml Bodies Together With Tp53
Alternative Antibody Names Anti-Serine/Threonine-Protein Kinase Chk2 antibody
Anti-Chk2 Checkpoint Homolog antibody
Anti-Cds1 Homolog antibody
Anti-Hucds1 antibody
Anti-Hcds1 antibody
Anti-Checkpoint Kinase 2 antibody
Anti-CHEK2 antibody
Anti-CDS1 antibody
Anti-CHK2 antibody
Anti-RAD53 antibody

Information sourced from Uniprot.org

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