CHEK2 - checkpoint kinase 2 Gene
Also Known as CDS1; CHK2; LFS2; RAD53; hCds1; HuCds1; PP1425
Species: Homo sapiens
About CHEK2
This gene has 25 transcripts (splice variants), 206 orthologues and is associated with 124 phenotypes. Ubiquitous expression in bone marrow (RPKM 3.3), lymph node (RPKM 3.1) and 24 other tissues.
Summary
In response to DNA damage and replication blocks, cell cycle progression is halted through the control of critical cell cycle regulators. The protein encoded by this gene is a cell cycle checkpoint regulator and putative tumor suppressor. It contains a forkhead-associated protein interaction domain essential for activation in response to DNA damage and is rapidly phosphorylated in response to replication blocks and DNA damage. When activated, the encoded protein is known to inhibit CDC25C Phosphatase, preventing entry into Mitosis, and has been shown to stabilize the tumor suppressor protein p53, leading to cell cycle arrest in G1. In addition, this protein interacts with and phosphorylates BRCA1, allowing BRCA1 to restore survival after DNA damage. Mutations in this gene have been linked with Li-Fraumeni syndrome, a highly penetrant familial Cancer phenotype usually associated with inherited mutations in TP53. Also, mutations in this gene are thought to confer a predisposition to sarcomas, breast Cancer, and brain tumors. This nuclear protein is a member of the CDS1 subfamily of serine/threonine protein kinases. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]
CHEK2 Products (24)
| mRNA | Protein | Name |
|---|---|---|
| XM_006724114.4 | XP_006724177.3 | serine/threonine-protein kinase Chk2 isoform X12 |
| XM_047441105.1 | XP_047297061.1 | serine/threonine-protein kinase Chk2 isoform X5 |
| XM_017028560.2 | XP_016884049.1 | serine/threonine-protein kinase Chk2 isoform X2 |
| XM_011529845.3 | XP_011528147.1 | serine/threonine-protein kinase Chk2 isoform X15 |
| XM_011529840.4 | XP_011528142.1 | serine/threonine-protein kinase Chk2 isoform X4 |
| NM_001257387.2 | NP_001244316.1 | serine/threonine-protein kinase Chk2 isoform d |
| XM_011529842.3 | XP_011528144.1 | serine/threonine-protein kinase Chk2 isoform X10 |
| XM_024452148.2 | XP_024307916.1 | serine/threonine-protein kinase Chk2 isoform X6 |
| XR_937807.3 | ||
| XR_007067954.1 | ||
| NM_001005735.2 | NP_001005735.1 | serine/threonine-protein kinase Chk2 isoform c |
| XR_007067955.1 | ||
| XM_006724116.3 | XP_006724179.2 | serine/threonine-protein kinase Chk2 isoform X14 |
| XM_047441108.1 | XP_047297064.1 | serine/threonine-protein kinase Chk2 isoform X13 |
| XM_047441104.1 | XP_047297060.1 | serine/threonine-protein kinase Chk2 isoform X3 |
| NM_001349956.2 | NP_001336885.1 | serine/threonine-protein kinase Chk2 isoform e |
| XM_011529839.3 | XP_011528141.1 | serine/threonine-protein kinase Chk2 isoform X1 |
| XR_937806.3 | ||
| XM_047441106.1 | XP_047297062.1 | serine/threonine-protein kinase Chk2 isoform X7 |
| XM_047441107.1 | XP_047297063.1 | serine/threonine-protein kinase Chk2 isoform X8 |
| XM_024452149.2 | XP_024307917.1 | serine/threonine-protein kinase Chk2 isoform X9 |
| NM_007194.4 | NP_009125.1 | serine/threonine-protein kinase Chk2 isoform a |
| XM_011529844.3 | XP_011528146.1 | serine/threonine-protein kinase Chk2 isoform X11 |
| NM_145862.2 | NP_665861.1 | serine/threonine-protein kinase Chk2 isoform b |
| Molecular Function GO Annotation | Evidence | References | Source |
|---|---|---|---|
| enables identical protein binding |
IPI
IPI: Inferred from physical interaction
|
16794575 | GOA |
| enables protein binding |
IPI
IPI: Inferred from physical interaction
|
11298456 | GOA |
| enables protein homodimerization activity |
IDA
IDA: Inferred from direct assay
|
16794575 | GOA |
| enables protein kinase binding |
IPI
IPI: Inferred from physical interaction
|
16481012 | GOA |
| enables protein serine/threonine kinase activity |
IDA
IDA: Inferred from direct assay
|
12717439 | GOA |
| enables ubiquitin protein ligase binding |
IPI
IPI: Inferred from physical interaction
|
22266820 | GOA |
| Cellular Component GO Annotation | Evidence | References | Source |
|---|---|---|---|
| located in PML body |
IDA
IDA: Inferred from direct assay
|
12402044 | GOA |
| colocalizes with chromosome, telomeric region |
IDA
IDA: Inferred from direct assay
|
15149599 | GOA |
CHEK2 Protein Structure
FHA: FHA domain (113 - 191)
Pkinase: Protein kinase domain (222 - 486)
- 0
- 100
- 200
- 300
- 400
- 500
- 543 a.a.
| Protein Preferred Names | Protein Names | |
|---|---|---|
|
serine/threonine-protein kinase Chk2 |
|
|
CHEK2 Protein-protein interaction Information
|
Type
|
Protein Name | Protein ID | Interactor | Interactor Species | Interactor ID | Detection Method | References |
|---|---|---|---|---|---|---|---|
|
Intra
|
CHEK2 | O96017 | MDM2 | Homo sapiens | Q00987 | 15862297 | |
|
Intra
|
CHEK2 | O96017 | KPNA2 | Homo sapiens | P52292 | 23178491 | |
|
Intra
|
CHEK2 | O96017 | CHEK2 | Homo sapiens | O96017 | 18239682 | |
|
Intra
|
CHEK2 | O96017 | KPNA2 | Homo sapiens | P52292 | 12909615 | |
|
Intra
|
CHEK2 | O96017 | CHEK2 | Homo sapiens | O96017 | 16794575 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5A | Homo sapiens | Q15172 | 15380617 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5A | Homo sapiens | Q15172 | 15380617 | |
|
Intra
|
CHEK2 | O96017 | CHEK2 | Homo sapiens | O96017 | 16794575 | |
|
Intra
|
CHEK2 | O96017 | PLK1 | Homo sapiens | P53350 | 12493754 | |
|
Intra
|
CHEK2 | O96017 | MDM2 | Homo sapiens | Q00987 | 15862297 | |
|
Intra
|
CHEK2 | O96017 | CHEK2 | Homo sapiens | O96017 | 18239682 | |
|
Intra
|
CHEK2 | O96017 | KPNA2 | Homo sapiens | P52292 | 12909615 | |
|
Intra
|
CHEK2 | O96017 | MDM2 | Homo sapiens | Q00987 | 15862297 | |
|
Intra
|
CHEK2 | O96017 | KPNA2 | Homo sapiens | P52292 | 12909615 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5C | Homo sapiens | Q13362-1 | 15380617 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5C | Homo sapiens | Q13362-2 | 15380617 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5C | Homo sapiens | Q13362-3 | 15380617 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5C | Homo sapiens | Q13362-3 | 15380617 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5C | Homo sapiens | Q13362-3 | 15380617 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5B | Homo sapiens | Q15173 | 15380617 | |
|
Intra
|
CHEK2 | O96017 | RNF20 | Homo sapiens | Q5VTR2 | 25640309 | |
|
Intra
|
CHEK2 | O96017 | RNF20 | Homo sapiens | Q5VTR2 | 25640309 | |
|
Cross
|
CHEK2 | O96017 | P0C6X7-PRO_0000037319 | Human SARS coronavirus | P0C6X7-PRO_0000037319 | 22046132 | |
|
Cross
|
CHEK2 | O96017 | P0C6X7-PRO_0000037319 | Human SARS coronavirus | P0C6X7-PRO_0000037319 | 22046132 | |
|
Intra
|
CHEK2 | O96017 | USP7 | Homo sapiens | Q93009 | 23178491 | |
|
Intra
|
CHEK2 | O96017 | VCP | Homo sapiens | P55072 | 17525332 | |
|
Intra
|
CHEK2 | O96017 | VCP | Homo sapiens | P55072 | 17525332 | |
|
Intra
|
CHEK2 | O96017 | AATF | Homo sapiens | Q9NY61 | 17157788 | |
|
Intra
|
CHEK2 | O96017 | AATF | Homo sapiens | Q9NY61 | 17157788 | |
|
Intra
|
CHEK2 | O96017 | IL24 | Homo sapiens | Q13007 | 25640309 | |
|
Intra
|
CHEK2 | O96017 | IL24 | Homo sapiens | Q13007 | 25640309 | |
|
Intra
|
CHEK2 | O96017 | RB1 | Homo sapiens | P06400 | 17380128 | |
|
Intra
|
CHEK2 | O96017 | RB1 | Homo sapiens | P06400 | 17380128 | |
|
Intra
|
CHEK2 | O96017 | PPM1G | Homo sapiens | O15355 | 23178491 | |
|
Intra
|
CHEK2 | O96017 | GINS2 | Homo sapiens | Q9Y248 | 17525332 | |
|
Intra
|
CHEK2 | O96017 | GINS2 | Homo sapiens | Q9Y248 | 17525332 | |
|
Intra
|
CHEK2 | O96017 | LRATD2 | Homo sapiens | Q96KN1 | 25640309 | |
|
Intra
|
CHEK2 | O96017 | LRATD2 | Homo sapiens | Q96KN1 | 25640309 | |
|
Intra
|
CHEK2 | O96017 | XRCC1 | Homo sapiens | P18887 | 18971944 | |
|
Intra
|
CHEK2 | O96017 | XRCC1 | Homo sapiens | P18887 | 18971944 | |
|
Intra
|
CHEK2 | O96017 | XRCC1 | Homo sapiens | P18887 | 18971944 | |
|
Intra
|
CHEK2 | O96017 | PPP2R5E | Homo sapiens | Q16537 | 15380617 | |
|
Cross
|
CHEK2 | O96017 | P27958-PRO_0000037577 | Hepatitis C virus | P27958-PRO_0000037577 | 18667510 | |
|
Cross
|
CHEK2 | O96017 | P27958-PRO_0000037577 | Hepatitis C virus | P27958-PRO_0000037577 | 18667510 | |
|
Cross
|
CHEK2 | O96017 | UL83 | Human cytomegalovirus | P06725 | 16477038 |
Recombinant CHEK2 Proteins
| Cat. No. | Product Name | Accession | Purity |
|---|---|---|---|
| HY-P75349 | CHEK2 Protein, Human (Active, sf9, GST) | O96017-1 (S2-L543) | ≥ 90%, as determined by reducing SDS-PAGE. |
CHEK2 Antibodies
| Cat. No. | Product Name | Application | Reactivity |
|---|---|---|---|
| HY-P80083 | Chk2 Antibody (YA504) | WB, ICC/IF, IHC-P, IP | Human |
| HY-P80799 | Phospho-Chk2 (Thr68) Antibody | WB, ICC/IF, IHC-P | Human, Mouse, Rat |
| HY-P83884 | CHK2 Antibody (YA3581) | WB, IHC-P, ICC/IF, ELISA | Human |
| HY-P83884A | CHK2 Antibody (YA3581)(PBS only) | WB, IHC-P, ICC/IF, ELISA | Human |
| HY-P86494 | Chk2 Antibody (YA6186) | WB, IHC-P, ICC/IF, IP, ELISA | Human, Mouse, Rat |
Related Diseases
| Diseases | Alias | |
|---|---|---|
| Transitional Cell Carcinoma |
|
|
| Pancreatic Cancer |
|
|
| Autosomal Recessive Cerebellar Ataxia |
|
|
| Basal Cell Carcinoma |
|
|
| Nk-Cell Enteropathy |
|
|
| Lung Cancer |
|
|
| Bone Osteosarcoma |
|
|
| Familial Ovarian Cancer |
|
|
| Nervous System Disease |
|
|
| Diffuse Midline Glioma, H3 K27m-Mutant |
|
|
| Hereditary Breast Ovarian Cancer Syndrome |
|
|
| Wilms Tumor 5 |
|
|
| Sporadic Breast Cancer |
|
|
| Adenoid Cystic Carcinoma |
|
|
| Colonic Benign Neoplasm |
|
|
| Osteogenic Sarcoma |
|
|
| Squamous Cell Carcinoma |
|
|
| Esophageal Cancer |
|
|
| Diffuse Gastric Cancer |
|
|
| Ovarian Clear Cell Adenocarcinoma |
|
|
| Cowden Syndrome 1 |
|
|
| Ovarian Cystadenoma |
|
|
| Fanconi Anemia, Complementation Group A |
|
|
| Aplastic Anemia |
|
|
| Thrombocytopenia |
|
|
| Bile Duct Cystadenoma |
|
|
| Familial Adenomatous Polyposis 2 |
|
|
| Hypertrophy Of Breast |
|
|
| Xeroderma Pigmentosum, Variant Type |
|
|
| Leukemia, Acute Myeloid |
|
|
| Li-Fraumeni Syndrome |
|
|
| Ataxia-Telangiectasia |
|
|
| Inherited Cancer-Predisposing Syndrome |
|
|
| Gastric Cancer |
|
|
| Cerebellar Disease |
|
|
| Congenital Heart Defects, Multiple Types, 3 |
|
|
| Nijmegen Breakage Syndrome |
|
|
| Tumor Predisposition Syndrome |
|
|
| Lymphoma |
|
|
| Breast Cancer |
|
|
| Lynch Syndrome |
|
|
| Cowden Syndrome |
|
|
| Superficial Urinary Bladder Cancer |
|
|
| Seckel Syndrome |
|
|
| Diffuse Gastric And Lobular Breast Cancer Syndrome |
|
|
| Neuroendocrine Carcinoma |
|
|
| Bilateral Breast Cancer |
|
|
| Premature Menopause |
|
|
| Li-Fraumeni Syndrome 1 |
|
|
| Hereditary Ataxia |
|
|
| Prostate Cancer |
|
|
| Melanoma, Cutaneous Malignant 1 |
|
|
| Ovarian Cancer |
|
|
| Acute Promyelocytic Leukemia |
|
|
| Sarcoma |
|
|
| Wilms Tumor 1 |
|
|
| Rhabdomyosarcoma |
|
|
| Diamond-Blackfan Anemia 11 |
|
|
| Telangiectasis |
|
|
| Hereditary Breast Cancer |
|
|
| Autosomal Genetic Disease |
|
|
| Colitis |
|
|
| Small Cell Carcinoma |
|
|
| Leiomyosarcoma |
|
|
| Cervical Adenoma Malignum |
|
|
| Myelodysplastic Syndrome |
|
|
| Colorectal Cancer |
|
|
| Fallopian Tube Carcinoma |
|
|
| Li-Fraumeni Syndrome 2 |
|
|
Orthologs Information
| Species | Symbol | Source | ID |
|---|---|---|---|
| Felis catus | CHEK2 | VGNC | VGNC:60851 |
| Rattus norvegicus | CHEK2 | RGD | RGD:621543 |
| Macaca mulatta | CHEK2 | VGNC | VGNC:70958 |
| Bos taurus | CHEK2 | VGNC | VGNC:27286 |
| Mus musculus | CHEK2 | MGD | MGI:1355321 |
| Canis familiaris | CHEK2 | VGNC | VGNC:39209 |
| Others | CHEK2 | NCBI |