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AB261724

Anti-Cdk9 antibody [EPR22956-60]

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(1 Publication)

Rabbit Recombinant Monoclonal CDK9 antibody. Suitable for IP, WB, Flow Cyt (Intra) and reacts with Mouse, Human, Rat samples. Cited in 1 publication.

View Alternative Names

CDC2L4, TAK, CDK9, 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

6 Images
Flow Cytometry (Intracellular) - Anti-Cdk9 antibody [EPR22956-60] (AB261724)
  • Flow Cyt (Intra)

Unknown

Flow Cytometry (Intracellular) - Anti-Cdk9 antibody [EPR22956-60] (AB261724)

Intracellular flow cytometric analysis of 4% paraformaldehyde fixed 90% methanol permeabilized HeLa (human cervix adenocarcinoma epithelial cell) cells labelling CDK9 with ab261724 at 1/600 (Red) compared with a Rabbit monoclonal IgG (ab172730, Black) isotype control and an unlabelled control (cells without incubation with primary antibody and secondary antibody) (Blue). A Goat anti rabbit IgG (Alexa Fluor® 488, ab150077) at 1/200 was used as the secondary antibody.

Immunoprecipitation - Anti-Cdk9 antibody [EPR22956-60] (AB261724)
  • IP

Unknown

Immunoprecipitation - Anti-Cdk9 antibody [EPR22956-60] (AB261724)

CDK9 was immunoprecipitated from 0.35 mg HeLa (human cervix adenocarcinoma epithelial cell) whole cell lysate with ab261724 at 1/30 (2ug in 0.35mg lysates). Western blot was performed on the immunoprecipitate using ab261724 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366) was used at 1/5000 dilution.

Lane 1 : HeLa (human cervix adenocarcinoma epithelial cell) whole cell lysate 10ug

Lane 2 : ab261724 IP in HeLa whole cell lysate

Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab261724 in HeLa whole cell lysate

Blocking and dilution buffer and concentration : 5% NFDM/TBST.

Exposure time : 10 seconds

The 2 isoforms (42KD, 55KD) of CDK9 observed is consistent with what has been described in the literature (PMID : 26766294, 15452830).

All lanes:

Immunoprecipitation - Anti-Cdk9 antibody [EPR22956-60] (ab261724)

Predicted band size: 43 kDa

false

Flow Cytometry (Intracellular) - Anti-Cdk9 antibody [EPR22956-60] (AB261724)
  • Flow Cyt (Intra)

Unknown

Flow Cytometry (Intracellular) - Anti-Cdk9 antibody [EPR22956-60] (AB261724)

Intracellular flow cytometric analysis of 4% paraformaldehyde fixed 90% methanol permeabilized NIH/3T3 (mouse embryonic fibroblast) cells labelling CDK9 with ab261724 at 1/600 (Red) compared with a Rabbit monoclonal IgG (ab172730, Black) isotype control and an unlabelled control (cells without incubation with primary antibody and secondary antibody) (Blue). A Goat anti rabbit IgG (Alexa Fluor® 488, ab150077) at 1/200 was used as the secondary antibody.

Immunoprecipitation - Anti-Cdk9 antibody [EPR22956-60] (AB261724)
  • IP

Unknown

Immunoprecipitation - Anti-Cdk9 antibody [EPR22956-60] (AB261724)

CDK9 was immunoprecipitated from 0.35 mg NIH/3T3 (mouse embryonic fibroblast) whole cell lysate with ab261724 at 1/30 (2ug in 0.35mg lysates). Western blot was performed on the immunoprecipitate using ab261724 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366) was used at 1/5000 dilution.

Lane 1 : NIH/3T3 (mouse embryonic fibroblast) whole cell lysate 10ug

Lane 2 : ab261724 IP in NIH/3T3 whole cell lysate

Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab261724 in NIH/3T3 whole cell lysate

Blocking and dilution buffer and concentration : 5% NFDM/TBST.

Exposure time : 10 seconds

The 2 isoforms (42KD, 55KD) of CDK9 observed is consistent with what has been described in the literature (PMID : 26766294, 15452830).

All lanes:

Immunoprecipitation - Anti-Cdk9 antibody [EPR22956-60] (ab261724)

Predicted band size: 43 kDa

false

Western blot - Anti-Cdk9 antibody [EPR22956-60] (AB261724)
  • WB

Lab

Western blot - Anti-Cdk9 antibody [EPR22956-60] (AB261724)

Blocking and diluting buffer and concentration : 5% NFDM/TBST

The 2 isoforms (42KDa, 55KD) of CDK9 observed is consistent with what has been described in the literature (PMID : 26766294, 15452830).

Exposure time : Lanes 1-2 : 7.75 seconds Lanes 3-4 : 3 minutes

All lanes:

Western blot - Anti-Cdk9 antibody [EPR22956-60] (ab261724) at 1/1000 dilution

Lane 1:

293T (human embryonic kidney epithelial cell), whole cell lysate at 20 µg

Lane 2:

HeLa (human cervix adenocarcinoma epithelial cell), whole cell lysate at 20 µg

Lane 3:

Human heart tissue lysate at 20 µg

Lane 4:

Human spleen tissue lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 43 kDa

Observed band size: 42 kDa,55 kDa

false

Western blot - Anti-Cdk9 antibody [EPR22956-60] (AB261724)
  • WB

Lab

Western blot - Anti-Cdk9 antibody [EPR22956-60] (AB261724)

Blocking and diluting buffer and concentration : 5% NFDM/TBST.

The 2 isoforms (42KD, 55KD) of CDK9 observed is consistent with what has been described in the literature (PMID : 26766294, 15452830).

Exposure time : 3 minutes

All lanes:

Western blot - Anti-Cdk9 antibody [EPR22956-60] (ab261724) at 1/1000 dilution

Lane 1:

C6 (rat glial tumor glial cell), whole cell lysate at 10 µg

Lane 2:

RAW264.7 (mouse Abelson murine leukemia virus-induced tumor macrophage), whole cell lysate at 10 µg

Lane 3:

PC-12 (rat adrenal gland pheochromocytoma), whole cell lysate at 10 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 43 kDa

Observed band size: 42 kDa,55 kDa

false

  • Carrier free

    Anti-Cdk9 antibody [EPR22956-60] - BSA and Azide free

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR22956-60

Isotype

IgG

Carrier free

No

Reacts with

Mouse, Rat, Human

Applications

IP, WB, Flow Cyt (Intra)

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "ChIP" : {"fullname" : "ChIP", "shortname":"ChIP"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"}, "FlowCytIntra" : {"fullname" : "Flow Cytometry (Intracellular)", "shortname":"Flow Cyt (Intra)"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "1/30", "IP-species-notes": "<p></p>", "ChIP-species-checked": "notRecommended", "ChIP-species-dilution-info": "", "ChIP-species-notes": "<p></p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "FlowCytIntra-species-checked": "testedAndGuaranteed", "FlowCytIntra-species-dilution-info": "1/600", "FlowCytIntra-species-notes": "<p></p>" }, "Mouse": { "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "1/30", "IP-species-notes": "<p></p>", "ChIP-species-checked": "notRecommended", "ChIP-species-dilution-info": "", "ChIP-species-notes": "", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>", "FlowCytIntra-species-checked": "testedAndGuaranteed", "FlowCytIntra-species-dilution-info": "1/600", "FlowCytIntra-species-notes": "<p></p>" }, "Rat": { "IP-species-checked": "guaranteed", "IP-species-dilution-info": "", "IP-species-notes": "", "ChIP-species-checked": "notRecommended", "ChIP-species-dilution-info": "", "ChIP-species-notes": "", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "", "FlowCytIntra-species-checked": "guaranteed", "FlowCytIntra-species-dilution-info": "", "FlowCytIntra-species-notes": "" } } }
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Product details

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

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Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Preservative: 0.01% Sodium azide Constituents: PBS, 40% Glycerol (glycerin, glycerine), 0.5% BSA
Shipped at conditions
Conditional Ambient
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
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Supplementary information

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

Cyclin-dependent kinase 9 (Cdk9) is a serine/threonine protein kinase involved in regulating transcription elongation. It is often referred to as part of the positive transcription elongation factor b (P-TEFb) complex. Cdk9 partners with cyclin T1 T2 or K to form this complex allowing it to phosphorylate the carboxyl-terminal domain (CTD) of RNA polymerase II. The molecular weight of Cdk9 is around 42 kDa. This protein is ubiquitously expressed found in many tissues including the heart liver and brain reflecting its important role.
Biological function summary

Cdk9 functions as a central component of transcriptional processes. It is essential for the transition of RNA polymerase II from the initiation phase to productive elongation. As part of the P-TEFb complex Cdk9 targets negative elongation factors helping relieve their inhibition. This regulation is especially important in the control of genes with strong promoter proximally paused polymerase. By doing so Cdk9 controls the expression of several genes involved in cell growth differentiation and response to stress.

Pathways

Cdk9 plays a significant role in transcription and signal transduction pathways. One important pathway is the NF-κB signaling where Cdk9 regulates the transcription of NF-κB target genes involved in immune response. Another significant pathway is the heat shock response where Cdk9 enhances the expression of heat shock proteins helping cells deal with stress. In both pathways it cooperates with other proteins like cyclins and negative elongation factors illustrating its interconnected role in cellular function.

Cdk9 has been linked to several conditions most notably cancer and cardiac hypertrophy. Its overactivation can lead to increased transcription of genes involved in proliferation making it a focus for cancer research. Cdk9 is also implicated in cardiac hypertrophy where its activity affects gene expression that can exacerbate the condition. Researchers study its interaction with other proteins such as THZ1 a Cdk9 inhibitor to explore potential therapeutic avenues.
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Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:
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Target data

Protein kinase involved in the regulation of transcription (PubMed : 10574912, PubMed : 10757782, PubMed : 11145967, PubMed : 11575923, PubMed : 11809800, PubMed : 11884399, PubMed : 14701750, PubMed : 16109376, PubMed : 16109377, PubMed : 20930849, PubMed : 28426094, PubMed : 29335245). 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 (PubMed : 10574912, PubMed : 10757782, PubMed : 11145967, PubMed : 11575923, PubMed : 11809800, PubMed : 11884399, PubMed : 14701750, PubMed : 16109376, PubMed : 16109377, PubMed : 16427012, PubMed : 20930849, PubMed : 28426094, PubMed : 30134174). This complex is inactive when in the 7SK snRNP complex form (PubMed : 10574912, PubMed : 10757782, PubMed : 11145967, PubMed : 11575923, PubMed : 11809800, PubMed : 11884399, PubMed : 14701750, PubMed : 16109376, PubMed : 16109377, PubMed : 20930849, PubMed : 28426094). Phosphorylates EP300, MYOD1, RPB1/POLR2A and AR and the negative elongation factors DSIF and NELFE (PubMed : 10912001, PubMed : 11112772, PubMed : 12037670, PubMed : 16427012, PubMed : 20081228, PubMed : 20980437, PubMed : 21127351, PubMed : 9857195). 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) (PubMed : 17956865, PubMed : 18362169). Promotes RNA synthesis in genetic programs for cell growth, differentiation and viral pathogenesis (PubMed : 10393184, PubMed : 11112772). P-TEFb is also involved in cotranscriptional histone modification, mRNA processing and mRNA export (PubMed : 15564463, PubMed : 19575011, PubMed : 19844166, PubMed : 28539972). 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 (PubMed : 15564463, PubMed : 19575011, PubMed : 19844166). Also catalyzes phosphorylation of histone H1.4 (H1-4) at Ser-187' (H1.4S187Ph), a modification associated with transcription activation (PubMed : 28539972). 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 (PubMed : 21127351). 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 (PubMed : 20493174). In addition, probable function in DNA repair of isoform 2 via interaction with KU70/XRCC6 (PubMed : 20493174). Promotes cardiac myocyte enlargement (PubMed : 20081228). RPB1/POLR2A phosphorylation on 'Ser-2' in CTD activates transcription (PubMed : 21127351). AR phosphorylation modulates AR transcription factor promoter selectivity and cell growth. DSIF and NELF phosphorylation promotes transcription by inhibiting their negative effect (PubMed : 10912001, PubMed : 11112772, PubMed : 9857195). The phosphorylation of MYOD1 enhances its transcriptional activity and thus promotes muscle differentiation (PubMed : 12037670). Catalyzes phosphorylation of KAT5, promoting KAT5 recruitment to chromatin and histone acetyltransferase activity (PubMed : 29335245).
See full target information CDK9
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Publications (1)

Recent publications for all applications. Explore the full list and refine your search

Nature 619:606-615 PubMed37438521

2023

Co-transplantation of autologous T cells in a cell therapy for Parkinson's disease.

Applications

Unspecified application

Species

Unspecified reactive species

Tae-Yoon Park,Jeha Jeon,Nayeon Lee,Jisun Kim,Bin Song,Jung-Ho Kim,Sang-Kyou Lee,Dongxin Liu,Young Cha,Minseon Kim,Pierre Leblanc,Todd M Herrington,Bob S Carter,Jeffrey S Schweitzer,Kwang-Soo Kim
View all publications
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Product promise

We are committed to supporting your work with high-quality reagents, and we're here for you every step of the way. In the unlikely event that one of our products does not perform as expected, you're protected by our Product Promise.
For full details, please see our Terms & Conditions

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

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