Anti-CDK9 antibody (STJA0010131)

SKU:
STJA0010131

Current Stock:
Host: Rabbit
Applications: WB/ELISA
Reactivity: Human/Rat/Mouse
Note: STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS.
Short Description: Rabbit polyclonal antibody anti-Cyclin-dependent kinase 9 is suitable for use in Western Blot and ELISA research applications.
Clonality: Polyclonal
Conjugation: Unconjugated
Isotype: IgG
Formulation: Liquid in PBS containing 50% Glycerol, 0.5% BSA and 0.02% Sodium Azide.
Purification: The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
Concentration: 1 mg/mL
Dilution Range: WB 1:1000-2000
ELISA 1:5000-20000
Storage Instruction: Store at-20°C for up to 1 year from the date of receipt, and avoid repeat freeze-thaw cycles.
Gene Symbol: CDK9
Gene ID: 1025
Uniprot ID: CDK9_HUMAN
Specificity: This antibody detects endogenous levels of Human Cdk9
Immunogen: Synthesized peptide derived from human Cdk9
Tissue Specificity Ubiquitous.
Post Translational Modifications Autophosphorylation at Thr-186, Ser-347, Thr-350, Ser-353, Thr-354 and Ser-357 triggers kinase activity by promoting cyclin and substrate binding (e.g. HIV TAT) upon conformational changes. Thr-186 phosphorylation requires the calcium Ca(2+) signaling pathway, including CaMK1D and calmodulin. This inhibition is relieved by Thr-29 dephosphorylation. However, phosphorylation at Thr-29 is inhibitory within the HIV transcription initiation complex. Phosphorylation at Ser-175 inhibits kinase activity. Can be phosphorylated on either Thr-362 or Thr-363 but not on both simultaneously. Dephosphorylation of Thr-186 by PPM1A and PPM1B blocks CDK9 activity and may lead to CDK9 proteasomal degradation. However, PPP1CA-mediated Thr-186 dephosphorylation is required to release P-TEFb from its inactive P-TEFb/7SK snRNP complex. Dephosphorylation of C-terminus Thr and Ser residues by protein phosphatase-1 (PP1) triggers CDK9 activity, contributing to the activation of HIV-1 transcription. N6-acetylation of Lys-44 promotes kinase activity, whereas acetylation of both Lys-44 and Lys-48 mediated by PCAF/KAT2B and GCN5/KAT2A reduces kinase activity. The acetylated form associates with PML bodies in the nuclear matrix and with the transcriptionally silent HIV-1 genome.deacetylated upon transcription stimulation. Deacetylated by SIRT7, promoting the kinase activity and subsequent 'Ser-2' phosphorylation of the C-terminal domain (CTD) of RNA polymerase II. Polyubiquitinated and thus activated by UBR5. This ubiquitination is promoted by TFIIS/TCEA1 and favors 'Ser-2' phosphorylation of RPB1/POLR2A CTD.
Function Protein kinase involved in the regulation of transcription. Member of the cyclin-dependent kinase pair (CDK9/cyclin-T) complex, also called positive transcription elongation factor b (P-TEFb), which facilitates the transition from abortive to productive elongation by phosphorylating the CTD (C-terminal domain) of the large subunit of RNA polymerase II (RNAP II) POLR2A, SUPT5H and RDBP. This complex is inactive when in the 7SK snRNP complex form. Phosphorylates EP300, MYOD1, RPB1/POLR2A and AR and the negative elongation factors DSIF and NELFE. Regulates cytokine inducible transcription networks by facilitating promoter recognition of target transcription factors (e.g. TNF-inducible RELA/p65 activation and IL-6-inducible STAT3 signaling). Promotes RNA synthesis in genetic programs for cell growth, differentiation and viral pathogenesis. P-TEFb is also involved in cotranscriptional histone modification, mRNA processing and mRNA export. Modulates a complex network of chromatin modifications including histone H2B monoubiquitination (H2Bub1), H3 lysine 4 trimethylation (H3K4me3) and H3K36me3.integrates phosphorylation during transcription with chromatin modifications to control co-transcriptional histone mRNA processing. The CDK9/cyclin-K complex has also a kinase activity towards CTD of RNAP II and can substitute for CDK9/cyclin-T P-TEFb in vitro. Replication stress response protein.the CDK9/cyclin-K complex is required for genome integrity maintenance, by promoting cell cycle recovery from replication arrest and limiting single-stranded DNA amount in response to replication stress, thus reducing the breakdown of stalled replication forks and avoiding DNA damage. In addition, probable function in DNA repair of isoform 2 via interaction with KU70/XRCC6. Promotes cardiac myocyte enlargement. RPB1/POLR2A phosphorylation on 'Ser-2' in CTD activates transcription. AR phosphorylation modulates AR transcription factor promoter selectivity and cell growth. DSIF and NELF phosphorylation promotes transcription by inhibiting their negative effect. The phosphorylation of MYOD1 enhances its transcriptional activity and thus promotes muscle differentiation. Catalyzes phosphorylation of KAT5, promoting KAT5 recruitment to chromatin and histone acetyltransferase activity.
Protein Name Cyclin-Dependent Kinase 9
C-2k
Cell Division Cycle 2-Like Protein Kinase 4
Cell Division Protein Kinase 9
Serine/Threonine-Protein Kinase Pitalre
Tat-Associated Kinase Complex Catalytic Subunit
Database Links Reactome: R-HSA-112382
Reactome: R-HSA-167152
Reactome: R-HSA-167200
Reactome: R-HSA-167238
Reactome: R-HSA-167243
Reactome: R-HSA-167246
Reactome: R-HSA-167287
Reactome: R-HSA-167290
Reactome: R-HSA-176034
Reactome: R-HSA-2173796
Reactome: R-HSA-674695
Reactome: R-HSA-6796648
Reactome: R-HSA-6807505
Reactome: R-HSA-75955
Reactome: R-HSA-9018519
Cellular Localisation Nucleus
Cytoplasm
Pml Body
Accumulates On Chromatin In Response To Replication Stress
Complexed With Ccnt1 In Nuclear Speckles
But Uncomplexed Form In The Cytoplasm
The Translocation From Nucleus To Cytoplasm Is Xpo1/Crm1-Dependent
Associates With Pml Body When Acetylated
Alternative Antibody Names Anti-Cyclin-Dependent Kinase 9 antibody
Anti-C-2k antibody
Anti-Cell Division Cycle 2-Like Protein Kinase 4 antibody
Anti-Cell Division Protein Kinase 9 antibody
Anti-Serine/Threonine-Protein Kinase Pitalre antibody
Anti-Tat-Associated Kinase Complex Catalytic Subunit antibody
Anti-CDK9 antibody
Anti-CDC2L4 antibody
Anti-TAK antibody

Information sourced from Uniprot.org

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