PLK1 / PLK-1 recombinant protein

Recombinant Human PLK1 / PLK-1 Protein (His tag)

Cat. Num. AAA2545099

• Gene Names: PLK1; PLK; STPK13
• Purity: > 90 % as determined by SDS-PAGE
• Synonyms: PLK1 / PLK-1; Recombinant Human PLK1 / PLK-1 Protein (His tag); PLK; STPK13; PLK1; PLK1 / PLK-1 recombinant protein

• Host: Baculovirus-Insect Cells
• Purity/Purification: > 90 % as determined by SDS-PAGE
• Form/Format: Supplied as sterile 50mM Tris, 100mM NaCl, pH 7.4, 0.5mM EDTA, 0.5mM EGTA, 0.5mM PMSF, 25% glycerol
• Sequence Length: 603

• Application Notes: The recombinant human PLK1 consists of 621 amino acids and predicts a molecular mass of 70.5 kDa. It migrates as an approximately 66 kDa band in SDS-PAGE under reducing conditions.
• Predicted N Terminal: His
• Endotoxin: < 1.0 EU per mug of the protein as determined by the LAL method
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -70 degree C

SDS-PAGE

Related Product Information for PLK1 / PLK-1 recombinant protein

Background: Serine / threonine-protein kinase PLK1 / PLK-1, also known as polo-like kinase 1 (PLK-1) or serine / threonine-protein kinase 13 (STPK13), Polo-like kinases (PLKs), is a family of four serine / threonine protein kinases that are critical regulators of cell cycle progression, mitosis, cytokinesis, and the DNA damage response. PLK1 / PLK-1 is ubiquitously expressed. The mRNA and protein expression of PLK1 / PLK-1, -2 and -4 are coordinately regulated during cell cycle progression, but PLK3 levels are independent of the other three family members. PLK1 / PLK-1 is the most well characterized member of this family and strongly promotes the progression of cells through mitosis. During the various stages of mitosis PLK1 / PLK-1 localizes to the centrosomes, kinetochores and central spindle. PLKs are dysregulated in a variety of human cancers. PLK1 / PLK-1 overexpression correlates with cellular proliferation and poor prognosis. Serine / threonine-protein kinase that performs several important functions throughout M phase of the cell cycle, including the regulation of centrosome maturation and spindle assembly, the removal of cohesins from chromosome arms, the inactivation of APC / C inhibitors, and the regulation of mitotic exit and cytokinesis. It is required for recovery after DNA damage checkpoint and entry into mitosis. PLK1 / PLK-1 is required for kinetochore localization of BUB1B, spindle pole localization of isoform 3 of SGOL1 and plays a role in regulating its centriole cohesion function. PLK1 / PLK-1 Phosphorylates BORA, and thereby promotes the degradation of BORA. PLK1 / PLK-1 also contributes to the regulation of AURKA function and phosphorylates SGOL1.

Description: A DNA sequence encoding the human PLK1 (NP_005021.2) (Met 1-Ser 603) was expressed, with a polyhistidine tag at the N-terminus.

NCBI and Uniprot Product Information

• NCBI GI #: 21359873
• NCBI GeneID: 5347
• NCBI Accession #: NP_005021.2
• NCBI GenBank Nucleotide #: NM_005030.5
• UniProt Accession #: P53350; Q15153; Q99746
• Molecular Weight: 68,255 Da
• NCBI Official Full Name: serine/threonine-protein kinase PLK1
• NCBI Official Synonym Full Names: polo like kinase 1
• NCBI Official Symbol: PLK1
• NCBI Official Synonym Symbols: PLK; STPK13
• NCBI Protein Information: serine/threonine-protein kinase PLK1
• UniProt Protein Name: Serine/threonine-protein kinase PLK1
• UniProt Gene Name: PLK1
• UniProt Synonym Gene Names: PLK; PLK-1; STPK13

NCBI Description

The Ser/Thr protein kinase encoded by this gene belongs to the CDC5/Polo subfamily. It is highly expressed during mitosis and elevated levels are found in many different types of cancer. Depletion of this protein in cancer cells dramatically inhibited cell proliferation and induced apoptosis; hence, it is a target for cancer therapy. [provided by RefSeq, Sep 2015]

Uniprot Description

PLK1: a kinase of the PLK family. Contains a polo-box domain (PBD), a specific phosphoserine or phosphothreonine binding domain. Substrates include BRCA2, Myt1, NudC, Cdc25C, cyclin B1, Nlp and other mitotic proteins. Inhibited by ATR. Plays a role in regulation of cytokinesis and coordinating M-phase events.

Protein type: EC 2.7.11.21; Kinase, protein; Other group; PLK family; Protein kinase, Other; Protein kinase, Ser/Thr (non-receptor)

Chromosomal Location of Human Ortholog: 16p12.2

Cellular Component: centrosome; cytoplasm; cytosol; kinetochore; microtubule cytoskeleton; midbody; nucleolus; nucleoplasm; nucleus; spindle; spindle microtubule; spindle midzone; spindle pole

Molecular Function: kinase activity; microtubule binding; protein binding; protein kinase activity; protein kinase binding; protein serine/threonine kinase activity

Biological Process: anaphase-promoting complex-dependent proteasomal ubiquitin-dependent protein catabolic process; cell proliferation; centrosome organization and biogenesis; cytokinesis; cytokinesis after mitosis; establishment of protein localization; G2/M transition DNA damage checkpoint; G2/M transition of mitotic cell cycle; microtubule bundle formation; mitosis; mitotic cell cycle spindle assembly checkpoint; mitotic nuclear envelope disassembly; mitotic sister chromatid segregation; negative regulation of apoptosis; negative regulation of cyclin-dependent protein kinase activity; negative regulation of transcription from RNA polymerase II promoter; nuclear envelope disassembly; peptidyl-serine phosphorylation; positive regulation of proteasomal ubiquitin-dependent protein catabolic process; positive regulation of proteolysis; positive regulation of ubiquitin-protein ligase activity; positive regulation of ubiquitin-protein ligase activity during mitotic cell cycle; protein amino acid phosphorylation; protein destabilization; protein ubiquitination; protein ubiquitination during ubiquitin-dependent protein catabolic process; regulation of cell cycle; regulation of mitotic cell cycle; regulation of mitotic metaphase/anaphase transition; regulation of protein binding; regulation of ubiquitin-protein ligase activity during mitotic cell cycle; sister chromatid cohesion