Checkpoint Homolog 2 (CHEK2) Recombinant Protein | CHEK2 recombinant protein

Recombinant Checkpoint Homolog 2 (CHEK2)

Cat. Num. AAA2018640

• Gene Names: CHEK2; CDS1; CHK2; LFS2; RAD53; hCds1; HuCds1; PP1425
• Applications: SDS-Page, Western Blot, ELISA, Immunoprecipitation
• Purity: > 95%
• Synonyms: Checkpoint Homolog 2 (CHEK2); Recombinant Checkpoint Homolog 2 (CHEK2); CHEK2 recombinant protein

• Host: E Coli
• Purity/Purification: > 95%
• Form/Format: Supplied as lyophilized form in PBS,pH7.4, containing 5% sucrose, 0.01% sarcosyl.
• Sequence: The target protein is fused with two N-terminal Tags, His-tag and T7-tag, its sequence is listed below.; MGSSHHHHHH SSGLVPRGSH MASMTGGQQM GRGSEF- V LELMEGGELF DKVVGNKRLK EATCKLYFYQ MLLAVQYLHE NGIIHRDLKP ENVLLSSQEE DCLIKITDFG HSKILGETSL MRTLCGTPTY LAPEVLVSVG TAGYNRAVDC WSLGVILFIC LSGYPPFSEH RTQVSLKDQI TSGKYNFIPE VWAEVSEKAL DLVKKLLVVD PKARFTTEEA LRHPWLQDED MKRKFQDLLS EENESTALPQ VLAQPSTSRK RPREGEAEGA ETTKRPAVCA
• Sequence Length: 586

• Applicable Applications for CHEK2 recombinant protein: SDS-PAGE, Western Blot (WB), ELISA (EIA), Immunoprecipitation (IP)
• Organism: Homo sapiens (Human)
• Expression System: Prokaryotic expression
• Residues: Val300~Ala540 (Accession # O96017) with two N-terminal Tags, His-tag and T7-tag
• Endotoxin Level: <1.0EU per 1ug (determined by the LAL method)
• Reconstitution: Reconstitute in sterile PBS, pH7.2-pH7.4.
• Preparation and Storage: Avoid repeated freeze/thaw cycles. Store at 2-8 degree C for one month. Aliquot and store at -80 degree C for 12 months.; Stability Test: The thermal stability is described by the loss rate of the targetprotein. The loss rate was determined by accelerated thermal degradation test,that is, incubate the protein at 37 degree C for 48h, and no obvious degradation andprecipitation were observed. (Referring from China Biological Products Standard,which was calculated by the Arrhenius equation.) The loss of this protein is lessthan 5% within the expiration date under appropriate storage condition.

SDS-Page

NCBI and Uniprot Product Information

• NCBI GI #: 54112407
• NCBI GeneID: 11200
• NCBI Accession #: NP_001005735.1
• NCBI GenBank Nucleotide #: NM_001005735.1
• UniProt Accession #: O96017; Q6QA03; Q6QA04; Q6QA05; Q6QA06; Q6QA07; Q6QA08; Q6QA10; A8K3Y9; B7ZBF3; B7ZBF4; B7ZBF5
• Molecular Weight: 31.0kDa
• NCBI Official Full Name: serine/threonine-protein kinase Chk2 isoform c
• NCBI Official Synonym Full Names: checkpoint kinase 2
• NCBI Official Symbol: CHEK2
• NCBI Official Synonym Symbols: CDS1; CHK2; LFS2; RAD53; hCds1; HuCds1; PP1425
• NCBI Protein Information: serine/threonine-protein kinase Chk2; cds1 homolog; CHK2 checkpoint homolog; checkpoint-like protein CHK2
• UniProt Protein Name: Serine/threonine-protein kinase Chk2
• Protein Family: Serine/threonine-protein kinase
• UniProt Gene Name: CHEK2
• UniProt Synonym Gene Names: CDS1; CHK2; RAD53; Hucds1; hCds1
• UniProt Entry Name: CHK2_HUMAN

NCBI Description

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]

Uniprot Description

Chk2: a CAMK protein kinase of the Rad53 family. 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. Phosphorylates and inhibits CDC25C, preventing entry into mitosis, p53, leading to cell cycle arrest in G1, and BRCA1, restoring survival after DNA damage. Twelve splice variant isoforms have been described for human Chk2. LOF mutants cause Li-Fraumeni syndrome, a highly penetrant familial cancer phenotype also caused by p53 mutations. Familial mutations also associated with prostate and breast cancer, and mutations also seen in a variety of sporadic cancers and cell lines.

Protein type: Tumor suppressor; EC 2.7.11.1; Kinase, protein; Protein kinase, Ser/Thr (non-receptor); Protein kinase, CAMK; CAMK group; RAD53 family

Chromosomal Location of Human Ortholog: 22q12.1

Cellular Component: nucleoplasm; Golgi apparatus; chromosome, telomeric region; PML body

Molecular Function: identical protein binding; protein serine/threonine kinase activity; protein binding; protein homodimerization activity; metal ion binding; ubiquitin protein ligase binding; protein kinase binding; ATP binding

Biological Process: transcription, DNA-dependent; DNA damage induced protein phosphorylation; protein stabilization; protein amino acid autophosphorylation; positive regulation of transcription, DNA-dependent; DNA damage response, signal transduction; protein amino acid phosphorylation; DNA damage response, signal transduction resulting in induction of apoptosis; regulation of transcription, DNA-dependent; cell division; cellular protein catabolic process; double-strand break repair; DNA damage checkpoint; response to gamma radiation; regulation of protein catabolic process; G2/M transition of mitotic cell cycle; response to DNA damage stimulus

Disease: Li-fraumeni Syndrome 2; Breast Cancer; Prostate Cancer; Osteogenic Sarcoma