2μg（R: reducing conditions）
Human CDK8 Protein, His tag
Human CDK8 Protein, His tag
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$100 USD
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Product Details
Product Details
Product Specification
| Species | Human |
| Synonyms | Cyclin-dependent kinase 8, Cell division protein kinase 8, Mediator complex subunit CDK8, Mediator of RNA polymerase II transcription subunit CDK8, Protein kinase K35 |
| Accession | P49336 |
| Amino Acid Sequence | Protein sequence (P49336, Pro341-Try464, with C-His tag) PTSDVFAGCQIPYPKREFLTEEEPDDKGDKKNQQQQQGNNHTNGTGHPGNQDSSHTQGPPLKKVRVVPPTTTSGGLIMTSDYQRSNPHAAYPNPGPSTSQPQSSMGYSATSQQPPQYSHQTHRY |
| Expression System | E.coli |
| Molecular Weight | Predicted MW: 15.4 kDa Observed MW: 20 kDa |
| Purity | ＞95% by SDS-PAGE |
| Endotoxin | <0.1EU/μg |
| Conjugation | Unconjugated |
| Tag | with C-His tag |
| Physical Appearance | Lyophilized Powder |
| Storage Buffer | Lyophilized from a 0.2 μm filtered solution of 0.2M PBS, pH7.4. |
| Reconstitution | Reconstitute no more than 1 mg/mL according to the size in deionized water after rapid centrifugation. |
| Stability & Storage | 12 months from date of receipt, -20 to -70 °C as supplied. |
Background
Cell division protein kinase 8 is a member of the cyclin-dependent protein kinase (CDK) family. CDK8 and cyclin C associate with the mediator complex and regulate transcription by several mechanisms. CDK8 binds to and/or phosphorylates several transcription factors, which can have an activating or inhibitory effect on transcription factor function. CDK8 phosphorylates the Notch intracellular domain, SREBP, and STAT1 S727. CDK8 also inhibits transcriptional activation by influencing turnover of subunits in the mediator complex tail module. In addition, CDK8 influences binding of RNA polymerase II to the mediator complex. CDK8 is a colorectal cancer oncogene: the CDK8 gene is amplified in human colorectal tumors, activating β-catenin-mediated transcription that drives colon tumorigenesis.
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