RNA pol II CTD phospho Ser5 antibody (mAb) (Clone 1H4B6)
Host / Isotype
Rat / IgG2b
Reactivity
Human
Applications
ICC, IF, WB
CloneNo.
1H4B6
Cat No : 61701,61702 61701
Synonyms
Validation Data Gallery
Product Information
| Tested Applications |
ICC, IF, WB
Applications Validated by Active Motif: ICC/IF: 4 - 6 ug/ml dilution WB*: 0.5 - 2 ug/ml dilution *Note: many chromatin-bound proteins are not soluble in a low salt nuclear extract and fractionate to the pellet. Therefore, we recommend a High Salt / Sonication Protocol when preparing nuclear extracts for Western blot. For RNA pol II CTD phospho Ser5, we also offer AbFlex RNA pol II CTD phospho Ser5 Recombinant Antibody (rAb). For details, see Catalog No. 91119. |
| Tested Reactivity | Human |
| Host / Isotype | Rat / IgG2b |
| Class | Monoclonal |
| Type | Antibody |
| Modification | Phosphorylated |
| Immunogen | This antibody was raised against a peptide containing the RNA pol II CTD sequence phosphorylated at serine 5. |
| Full Name | RNA pol II CTD phospho Ser5 antibody (mAb) (Clone 1H4B6) |
| Synonyms | RNA Pol II CTD, RNA Pol II, RNA polII, CTD, RNA polymerase II, antibody, antibodies, sample, monoclonal, C terminal domain, heptad repeat, phospho ser5, serine 5, serine5 |
| Molecular weight | 240 kDa |
| GenBank accession number | NP_000928 |
| RRID | AB_2793741 |
| Purification Method | Protein G Chromatography |
| Buffer | Purified IgG in PBS with 30% glycerol and 0.035% sodium azide. Sodium azide is highly toxic. |
| Storage | Some products may be shipped at room temperature. This will not affect their stability or performance. Avoid repeated freeze/thaw cycles by aliquoting items into single-use fractions for storage at -20°C for up to 2 years. Keep all reagents on ice when not in storage. |
Background Information
RNA pol II (RNA polymerase II) is responsible for synthesizing messenger RNA in eukaryotes. RNA pol II contains a carboxy terminal domain composed of heptapeptide repeats that are essential for polymerase activity. These repeats contain serine and threonine residues that are phosphorylated in actively transcribing RNA polymerase. In addition, RNA pol II, in combination with several other polymerase subunits, form the DNA binding domain of the polymerase, a groove in which the DNA template is transcribed into RNA. During the transcription cycle, the CTD of the large subunit of RNA pol II is reversibly phosphorylated. RNA pol II containing unphosphorylated CTD is recruited to the promoter, whereas the hyperphosphorylated CTD form is involved in active transcription. Phosphorylation occurs at two sites within the heptapeptide repeat, at Serine 5 and Serine 2. RNA pol II Serine 5 phosphorylation is confined to promoter regions and is necessary for the initiation of transcription.