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CIITA Antibody (N-Terminus)
Rabbit Polyclonal Antibody
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
Application 
| WB, IHC-P, IF, E |
|---|---|
| Primary Accession | P33076 |
| Reactivity | Human, Mouse, Rat |
| Host | Rabbit |
| Clonality | Polyclonal |
| Calculated MW | 124kDa |
| Dilution | IHC-P (5 µg/ml), WB (1-2 µg/ml), |
| Gene ID | 4261 |
|---|---|
| Other Names | MHC class II transactivator, CIITA, 2.3.1.-, 2.7.11.1, CIITA, MHC2TA |
| Target/Specificity | Human CIITA |
| Reconstitution & Storage | Short term 4°C, long term aliquot and store at -20°C, avoid freeze thaw cycles. Store undiluted. |
| Precautions | CIITA Antibody (N-Terminus) is for research use only and not for use in diagnostic or therapeutic procedures. |
| Name | CIITA (HGNC:7067) |
|---|---|
| Synonyms | MHC2TA |
| Function | Essential for transcriptional activity of the HLA class II promoter; activation is via the proximal promoter (PubMed:8402893, PubMed:7749984, PubMed:17493635, PubMed:16600381). Does not bind DNA (PubMed:8402893, PubMed:7749984, PubMed:17493635, PubMed:16600381). May act in a coactivator-like fashion through protein-protein interactions by contacting factors binding to the proximal MHC class II promoter, to elements of the transcription machinery, or both PubMed:8402893, PubMed:7749984, (PubMed:17493635, PubMed:16600381). Alternatively it may activate HLA class II transcription by modifying proteins that bind to the MHC class II promoter (PubMed:8402893, PubMed:7749984, PubMed:17493635, PubMed:16600381). Also mediates enhanced MHC class I transcription; the promoter element requirements for CIITA-mediated transcription are distinct from those of constitutive MHC class I transcription, and CIITA can functionally replace TAF1 at these genes. Activates CD74 transcription (PubMed:32855215). Exhibits intrinsic GTP- stimulated acetyltransferase activity (PubMed:11172716). Exhibits serine/threonine protein kinase activity: can phosphorylate the TFIID component TAF7, the RAP74 subunit of the general transcription factor TFIIF, histone H2B at 'Ser-37' and other histones (in vitro) (PubMed:24036077). Has antiviral activity against Ebola virus and coronaviruses, including SARS-CoV-2 (PubMed:32855215). Induces resistance by up-regulation of the p41 isoform of CD74, which blocks cathepsin-mediated cleavage of viral glycoproteins, thereby preventing viral fusion (PubMed:32855215). |
| Cellular Location | Nucleus. Nucleus, PML body. Note=Recruited to PML body by PML |
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Provided below are standard protocols that you may find useful for product applications.
Background
Essential for transcriptional activity of the HLA class II promoter; activation is via the proximal promoter. No DNA binding of in vitro translated CIITA was detected. May act in a coactivator-like fashion through protein-protein interactions by contacting factors binding to the proximal MHC class II promoter, to elements of the transcription machinery, or both. Alternatively it may activate HLA class II transcription by modifying proteins that bind to the MHC class II promoter. Also mediates enhanced MHC class I transcription; the promoter element requirements for CIITA-mediated transcription are distinct from those of constitutive MHC class I transcription, and CIITA can functionally replace TAF1 at these genes. Exhibits intrinsic GTP-stimulated acetyltransferase activity. Exhibits serine/threonine protein kinase activity: can phosphorylate the TFIID component TAF7, the RAP74 subunit of the general transcription factor TFIIF, histone H2B at 'Ser-37' and other histones (in vitro).
References
Steimle V.,et al.Cell 75:135-146(1993).
Riley J.L.,et al.Immunity 2:533-543(1995).
Quinn G.,et al.Eur. J. Immunogenet. 30:259-270(2003).
Day N.E.,et al.Leuk. Res. 27:1027-1038(2003).
Livingston R.J.,et al.Submitted (OCT-2006) to the EMBL/GenBank/DDBJ databases.
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