RNA Polymerase II/POLR2A Antibody (4H8) [FITC] Summary
Immunogen |
10 repeats of synthetic peptide YSPTSPS using chemically synthesized phospho-Ser 5 YSPTSpPS (Human). [UniProt# P24928] |
Specificity |
Please note that this antibody detects both unphosphorylated and phosphorylated forms of the protein. When using this antibody in western blot and IP, it recognizes both the II0 and IIA form of RPB1 (ie the largest RNAPII subunit). These different forms of RPB1 (as seen in gels) have traditionally been loosely defined as 'hyper-' and 'hypo-phosphorylated', respectively. Here, however, it is important to remember that RPB1 contains no less than 52 repeats of a heptapeptide (TSPTSPS) that can be phosphorylated at different positions (Tyr1, Ser2, Thr4, Ser5 and Ser7; this antibody was raised against a synthetic peptide with 10 of these repeats, mostly but probably not entirely, chemically phosphorylated at Ser5). So, when we say that it recognizes both forms (II0/hyper-phos and IIA/hypo-phos), it might really just mean that the antibody recognizes a few phosphorylated Ser5s among 52 otherwise mostly un-phosphorylated repeats. Alternatively, it might conceivably (though less likely) recognize UN-phosphorylated repeats as there might conceivably be a few of those even in the II0/hyper-phos RPB1 form.' |
Predicted Species |
Drosophila (100%), Hamster (100%), Plant (100%). Backed by our 100% Guarantee. |
Isotype |
IgG1 |
Clonality |
Monoclonal |
Host |
Mouse |
Gene |
POLR2A |
Purity |
Protein G purified |
Innovator's Reward |
Test in a species/application not listed above to receive a full credit towards a future purchase. |
Applications/Dilutions
Dilutions |
- Chromatin Immunoprecipitation (ChIP)
- CyTOF-ready
- ELISA
- Flow (Intracellular)
- Flow Cytometry
- Immunocytochemistry/ Immunofluorescence
- Immunoprecipitation
- Western Blot
|
Application Notes |
Optimal dilution of this antibody should be experimentally determined. |
Reactivity Notes
Does not cross react with monkey.
Packaging, Storage & Formulations
Storage |
Store at 4C in the dark. |
Buffer |
PBS |
Preservative |
0.05% Sodium Azide |
Purity |
Protein G purified |
Alternate Names for RNA Polymerase II/POLR2A Antibody (4H8) [FITC]
Background
RNA polymerase II (RNAPII) is a 12-subunit enzyme which synthesizes all mRNAs as well as several non-coding RNAs in eukaryotic cells thereby playing a central role in cellular functions. RNAPII is a DNA-dependent RNA polymerase enzyme which catalyzes the transcription of DNA into RNA employing four ribonucleoside triphosphates as substrates. The activity of RNAPII transcription machinery is regulated by DNA-binding transcriptional regulators in a gene/cell type-specific manner, whereas general transcription factors act as RNAPII accessory proteins required for the transcription of most class II genes, and the co-activators/co-repressors serve as bridges between DNA-bound factors and the RNAPII machinery, some affecting the organization and/or chemical modification of the chromatin template of RNAPII. RNA polymerase II subunit B1 (POLR2A) is the largest and the catalytic component of RNAPII which forms the polymerase active center together with the second largest subunit and is the central component of the basal RNAPII transcription machinery. It is composed of mobile elements that move relative to each other and POLR2A is the part of the core element with the central large cleft, the clamp element that moves to open and close the cleft and the jaws that are thought to grab the incoming DNA template.
Limitations
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are
guaranteed for 1 year from date of receipt.
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