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AB126920

Recombinant Human Cdk7 protein

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Recombinant Human Cdk7 protein is a Human Full Length protein, in the 1 to 346 aa range, expressed in Baculovirus infected Sf9 cells, with >95%, suitable for SDS-PAGE.

View Alternative Names

CAK, CAK1, CDKN7, MO15, STK1, CDK7, Cyclin-dependent kinase 7, 39 kDa protein kinase, CDK-activating kinase 1, Cell division protein kinase 7, Serine/threonine-protein kinase 1, TFIIH basal transcription factor complex kinase subunit, p39 Mo15

1 Images
SDS-PAGE - Recombinant Human Cdk7 protein (AB126920)
  • SDS-PAGE

Unknown

SDS-PAGE - Recombinant Human Cdk7 protein (AB126920)

SDS-PAGE analysis of ab126920.

Key facts

Purity

>95% SDS-PAGE

Expression system

Baculovirus infected Sf9 cells

Tags

GST tag N-Terminus

Applications

SDS-PAGE

applications

Biologically active

No

Accession

P50613

Animal free

No

Carrier free

No

Species

Human

Storage buffer

pH: 7.5 Preservative: 1.02% Imidazole Constituents: 25% Glycerol (glycerin, glycerine), 1.76% Sodium chloride, 0.81% Sodium phosphate, 0.004% (R*,R*)-1,4-Dimercaptobutan-2,3-diol, 0.002% PMSF

storage-buffer

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "SDS-PAGE": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }
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Sequence info

[{"sequence":"","proteinLength":"Full Length","predictedMolecularWeight":"66 kDa","actualMolecularWeight":null,"aminoAcidEnd":346,"aminoAcidStart":1,"nature":"Recombinant","expressionSystem":null,"accessionNumber":"P50613","tags":[{"tag":"GST","terminus":"N-Terminus"}]}]
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Properties and storage information

Shipped at conditions
Dry Ice
Appropriate short-term storage conditions
-80°C
Appropriate long-term storage conditions
-80°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
False
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Cyclin-dependent kinase 7 (Cdk7) also known as CAK is a protein that functions as a serine/threonine kinase. It has a mass of approximately 37 kDa and is expressed in various tissues including the liver heart and testis. Cdk7 forms part of the CDK-activating complex required for the cell cycle's progression and transcription processes. By phosphorylating important sites on target proteins Cdk7 contributes to the regulation of the cell cycle and RNA polymerase II-mediated transcription.
Biological function summary

Cdk7 interacts with other molecules playing a fundamental role in the regulation of cell division and transcription. Cdk7 is a component of the Cdk-activating kinase (CAK) complex alongside cyclin H and MAT1. This complex enables activation of other cyclin-dependent kinases through phosphorylation which is essential for DNA replication and repair. As part of the transcription complex TFIIH Cdk7 enhances RNA polymerase II's transcriptional activity influencing gene expression and cellular responses to external signals.

Pathways

Cdk7 participates in significant regulatory pathways controlling cell cycle and transcription. It is integral to the p53 Signaling and Cell Cycle pathways where it facilitates the activation of CDK1 CDK2 and CDK4/6 key players in cell cycle progression from the G1 to S phase. Through these pathways Cdk7 maintains cellular control upon environmental stress responses and DNA damage providing connections to tumor suppressor proteins such as p53.

Cdk7 has associations with cancer and neurodegenerative diseases. Its dysregulation can lead to unchecked cell proliferation contributing to the development of various cancers like breast and lung cancer. Cdk7's role in transcription implicates it in disorders like Alzheimer's disease where altered transcriptional regulation is observed. Furthermore its interaction with proteins such as p53 links it to cancer as p53 mutations can result in the loss of control over the cell cycle exacerbating tumorigenic processes.
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Specifications

Form

Liquid

Additional notes

Assessed by densitometry. Affinity purified.

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General info

Function

Serine/threonine kinase involved in cell cycle control and in RNA polymerase II-mediated RNA transcription. Cyclin-dependent kinases (CDKs) are activated by the binding to a cyclin and mediate the progression through the cell cycle. Each different complex controls a specific transition between 2 subsequent phases in the cell cycle. Required for both activation and complex formation of CDK1/cyclin-B during G2-M transition, and for activation of CDK2/cyclins during G1-S transition (but not complex formation). CDK7 is the catalytic subunit of the CDK-activating kinase (CAK) complex. Phosphorylates SPT5/SUPT5H, SF1/NR5A1, POLR2A, p53/TP53, CDK1, CDK2, CDK4, CDK6 and CDK11B/CDK11. CAK activates the cyclin-associated kinases CDK1, CDK2, CDK4 and CDK6 by threonine phosphorylation, thus regulating cell cycle progression. CAK complexed to the core-TFIIH basal transcription factor activates RNA polymerase II by serine phosphorylation of the repetitive C-terminal domain (CTD) of its large subunit (POLR2A), allowing its escape from the promoter and elongation of the transcripts (PubMed : 9852112). Phosphorylation of POLR2A in complex with DNA promotes transcription initiation by triggering dissociation from DNA. Its expression and activity are constant throughout the cell cycle. Upon DNA damage, triggers p53/TP53 activation by phosphorylation, but is inactivated in turn by p53/TP53; this feedback loop may lead to an arrest of the cell cycle and of the transcription, helping in cell recovery, or to apoptosis. Required for DNA-bound peptides-mediated transcription and cellular growth inhibition.

Sequence similarities

Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily.

Post-translational modifications

Phosphorylation of Ser-164 during mitosis inactivates the enzyme. Phosphorylation of Thr-170 is required for activity. Phosphorylated at Ser-164 and Thr-170 by CDK2.

Subcellular localisation

Nucleus

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Product protocols

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Target data

Serine/threonine kinase involved in cell cycle control and in RNA polymerase II-mediated RNA transcription. Cyclin-dependent kinases (CDKs) are activated by the binding to a cyclin and mediate the progression through the cell cycle. Each different complex controls a specific transition between 2 subsequent phases in the cell cycle. Required for both activation and complex formation of CDK1/cyclin-B during G2-M transition, and for activation of CDK2/cyclins during G1-S transition (but not complex formation). CDK7 is the catalytic subunit of the CDK-activating kinase (CAK) complex. Phosphorylates SPT5/SUPT5H, SF1/NR5A1, POLR2A, p53/TP53, CDK1, CDK2, CDK4, CDK6 and CDK11B/CDK11. CAK activates the cyclin-associated kinases CDK1, CDK2, CDK4 and CDK6 by threonine phosphorylation, thus regulating cell cycle progression. CAK complexed to the core-TFIIH basal transcription factor activates RNA polymerase II by serine phosphorylation of the repetitive C-terminal domain (CTD) of its large subunit (POLR2A), allowing its escape from the promoter and elongation of the transcripts (PubMed : 9852112). Phosphorylation of POLR2A in complex with DNA promotes transcription initiation by triggering dissociation from DNA. Its expression and activity are constant throughout the cell cycle. Upon DNA damage, triggers p53/TP53 activation by phosphorylation, but is inactivated in turn by p53/TP53; this feedback loop may lead to an arrest of the cell cycle and of the transcription, helping in cell recovery, or to apoptosis. Required for DNA-bound peptides-mediated transcription and cellular growth inhibition.
See full target information CDK7
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Primary Antibodies

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Secondary Antibodies

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