Mouse CDK9 Monoclonal Antibody | anti-CDK9 antibody

Anti-CDK9 Mouse mAb

Cat. Num. AAA476169

• Gene Names: CDK9; TAK; C-2k; CTK1; CDC2L4; PITALRE
• Reactivity: Human, Mouse, Rat
• Applications: Western Blot
• Synonyms: CDK9; Monoclonal Antibody; Anti-CDK9 Mouse mAb; TAK; C-2k; CTK1; CDC2L4; PITALRE; anti-CDK9 antibody

• Host: Mouse
• Reactivity: Human, Mouse, Rat
• Clonality: Monoclonal
• Isotype: IgG1
• Clone Number: 1C3-G10-B9
• Form/Format: Ascitic fluid containing 0.03% sodium azide.
• Sequence Length: 372

• Applicable Applications for anti-CDK9 antibody: Western Blot (WB)
• Immunogen: Purified recombinant fragment of human CDK9 expressed in E Coli.
• Sequence Similarities: Contains 1 protein kinase domain.
• Subunit Structure: Component of the super elongation complex (SEC), at least composed of EAF1, EAF2, CDK9, MLLT3/AF9, AFF (AFF1 or AFF4), the P-TEFb complex and ELL (ELL, ELL2 or ELL3). Associates with CCNT1/cyclin-T1, CCNT2/cyclin-T2 (isoform A and isoform B) or CCNK/cyclin-K to form active P-TEFb. P-TEFb forms a complex with AFF4/AF5Q31 and is part of the super elongation complex (SEC). Component of a complex which is composed of at least 5 members: HTATSF1/Tat-SF1, P-TEFb complex, RNA pol II, SUPT5H, and NCL/nucleolin. Associates with UBR5 and forms a transcription regulatory complex composed of CDK9, RNAP II, UBR5 and TFIIS/TCEA1 that can stimulate target gene transcription (e.g. gamma fibrinogen/FGG) by recruiting their promoters. Component of the 7SK snRNP inactive complex which is composed of at least 8 members: P-TEFb (composed of CDK9 and CCNT1/cyclin-T1), HEXIM1, HEXIM2, LARP7, BCDIN3, SART3 proteins and 7SK and U6 snRNAs. This inactive 7SK snRNP complex can also interact with NCOR1 and HDAC3, probably to regulate CDK9 acetylation. Release of P-TEFb from P-TEFb/7SK snRNP complex requires both PP2B to transduce calcium Ca (2+) signaling in response to stimuli (e.g. UV or hexamethylene bisacetamide (HMBA)), and PPP1CA to dephosphorylate Thr-186. This released P-TEFb remains inactive in the pre-initiation complex with BRD4 until new Thr-186 phosphorylation occurs after the synthesis of a short RNA. Interacts with BRD4, probably to target chromatin binding. Interacts with the acidic/proline-rich region of HIV-1 and HIV-2 Tat via T-loop region, and is thus required for HIV to hijack host transcription machinery during its replication through cooperative binding to viral TAR RNA. Interacts with activated nuclear STAT3 and RELA/p65. Binds to AR and MYOD1. Forms a complex composed of CDK9, CCNT1/cyclin-T1, EP300 and GATA4 that stimulates hypertrophy in cardiomyocytes. The large PER complex involved in the repression of transcriptional termination is composed of at least PER2, CDK9, DDX5, DHX9, NCBP1 and POLR2A. Isoform 3 binds to KU70/XRCC6. Interacts with herpes simplex virus 1 protein ICP22; this interaction inhibits the positive transcription elongation factor b (P-TEFb).
• Subcellular Location: Nucleus; PML body

Western Blot (WB)

(Western blot detection of CDK9 in Jurkat, MCF7, C6, 3T3 and Hela cell lysates using CDK9 mouse mAb (1:2000 diluted).Predicted band size:43KDa.Observed band size:43, 50KDa.)

Immunohistochemistry (IHC)

(Immunohistochemical analysis of paraffin-embedded rectum cancer tissues (left) and placenta tissues (right) using CDK9 mouse mAb with DAB staining.)

Immunohistochemistry (IHC)

(Immunohistochemical analysis of paraffin-embedded brain tissues (left) and esophageal cancer tissues (right) using CDK9 mouse mAb with DAB staining.)

Related Product Information for anti-CDK9 antibody

Entrez Summary: The protein encoded by this gene is a member of the cyclin-dependent protein kinase (CDK) family. CDK family members are highly similar to the gene products of S. cerevisiae cdc28, and S. pombe cdc2, and known as important cell cycle regulators. This kinase was found to be a component of the multiprotein complex TAK/P-TEFb, which is an elongation factor for RNA polymerase II-directed transcription and functions by phosphorylating the C-terminal domain of the largest subunit of RNA polymerase II. This protein forms a complex with and is regulated by its regulatory subunit cyclin T or cyclin K. HIV-1 Tat protein was found to interact with this protein and cyclin T, which suggested a possible involvement of this protein in AIDS. (provided by RefSeq)Tissue specificity: Ubiquitous.
UniPort Summary 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 NELF. 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.

NCBI and Uniprot Product Information

• NCBI GI #: 4502747
• NCBI GeneID: 1025
• NCBI Accession #: NP_001252.1
• NCBI GenBank Nucleotide #: NM_001261.3
• UniProt Accession #: P50750; Q5JU24; Q5JU25; Q5U006; Q96TF1
• Molecular Weight: 50kDa
• NCBI Official Full Name: cyclin-dependent kinase 9
• NCBI Official Synonym Full Names: cyclin dependent kinase 9
• NCBI Official Symbol: CDK9
• NCBI Official Synonym Symbols: TAK; C-2k; CTK1; CDC2L4; PITALRE
• NCBI Protein Information: cyclin-dependent kinase 9
• UniProt Protein Name: Cyclin-dependent kinase 9
• Protein Family: Cyclin-dependent kinase
• UniProt Gene Name: CDK9
• UniProt Synonym Gene Names: CDC2L4; TAK

NCBI Description

The protein encoded by this gene is a member of the cyclin-dependent protein kinase (CDK) family. CDK family members are highly similar to the gene products of S. cerevisiae cdc28, and S. pombe cdc2, and known as important cell cycle regulators. This kinase was found to be a component of the multiprotein complex TAK/P-TEFb, which is an elongation factor for RNA polymerase II-directed transcription and functions by phosphorylating the C-terminal domain of the largest subunit of RNA polymerase II. This protein forms a complex with and is regulated by its regulatory subunit cyclin T or cyclin K. HIV-1 Tat protein was found to interact with this protein and cyclin T, which suggested a possible involvement of this protein in AIDS. [provided by RefSeq, Jul 2008]

Uniprot Description

CDK9: a protein kinase of the CDK family. Forms a complex with and is regulated by its regulatory subunit cyclin T or cyclin K. A component of the multiprotein complex TAK/P-TEFb, which is an elongation factor for RNA polymerase II-directed transcription and functions by phosphorylating the C-terminal domain of the largest subunit of RNA polymerase II. Transcriptional elongation factor and cofactor for HIV Tat protein; RNAi blocks HIV replication, and inhibitors also block varicella zoster replication. Mediates signals leading to cardiac hypertrophy. Inhibitor: Flavopiridol.

Protein type: CDK family; CDK/CDK9 subfamily; CDK9 subfamily; CMGC group; Cell cycle regulation; EC 2.7.11.22; EC 2.7.11.23; Kinase, protein; Nuclear receptor co-regulator; Protein kinase, CMGC; Protein kinase, Ser/Thr (non-receptor)

Chromosomal Location of Human Ortholog: 9q34.11

Cellular Component: intracellular membrane-bound organelle; membrane; nucleoplasm; PML body; transcription elongation factor complex; transcription elongation factor complex b

Molecular Function: chromatin binding; cyclin-dependent protein kinase activity; DNA binding; kinase activity; protein binding; protein kinase activity; protein serine/threonine kinase activity; RNA polymerase subunit kinase activity

Biological Process: cell proliferation; positive regulation of histone phosphorylation; positive regulation of transcription from RNA polymerase II promoter; positive regulation of viral transcription; protein amino acid phosphorylation; regulation of DNA repair; regulation of histone modification; regulation of mitotic cell cycle; regulation of muscle cell differentiation; replication fork processing; RNA elongation from RNA polymerase II promoter; snRNA transcription from RNA polymerase II promoter; transcription from RNA polymerase II promoter; transcription initiation from RNA polymerase II promoter