- 询价
- Cell Signaling Technology
- 4735
- USA
- 2025年11月01日
- W, IHC-P
- Rabbit
- H,M,R,Hm,Sc
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- 详细信息
- 技术资料
- 抗体英文名：
Phospho-Rpb1 CTD (Ser2/5) Antibody
- 抗原：
synthetic phosphopeptide corresponding to residues surrounding Ser2/5 of the Rpb1 CTD heptapeptide
- 应用范围：
W, IHC-P
- 宿主：
Rabbit
- 供应商：
CST
- 保质期：
详见说明书
- 库存：
大量
- 适应物种：
H,M,R,Hm,Sc
- 级别：
详见MSDS文件
- 是否单克隆：
2
- 保存条件：
-20°c
- 规格：
100 ul (10 western blots)/carrier free & custom formulation / quantity
| 规格： | 产品价格： | ￥请询价 | |
|---|---|---|---|
| 规格： | 100 ul (10 western blots) | 产品价格： | ￥请询价 |
| 规格： | carrier free & custom formulation / quantity | 产品价格： | ￥请询价 |
pathway more info application references datasheet PDF MSDS PDF protocols
Applications Key: W=Western Blotting IHC-P=Immunohistochemistry (Paraffin)
Reactivity Key: H=Human M=Mouse R=Rat Hm=Hamster Sc=S. cerevisiae
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
| Applications | Reactivity | Sensitivity | MW (kDa) | Source |
|---|---|---|---|---|
| W IHC-P | H M R (Hm) (Sc) | Endogenous | 250 | Rabbit |
| Protocols |
|
|---|---|
| Specificity / Sensitivity | Phospho-Rpb1 CTD (Ser2/5) Antibody detects endogenous levels of Rpb1 when the carboxy-termial domain heptapeptide repeat [Tyr1,Ser2,Pro3,Thr4,Ser5,Pro6,Ser7] is dually phosphorylated at Ser2 and Ser5 and singly phosphorylated at either Ser2 or Ser5. |
| Source / Purification | Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser2/5 of the Rpb1 CTD heptapeptide. Antibodies are purified by protein A and peptide affinity chromatography. Western Blotting
Western blot analysis of extracts from MCF-7 cells, untreated or treated with doxorubicin (0.5 μM, 36 h), doxorubicin followed by λ Phosphatase NEB#P0753 (10,000 Units/ml, 1 h), nocodazole (50 ng/ml, 36 h) or nocodazole followed by λ Phosphatase, using Phospho-Rpb1 CTD (Ser2/5) Antibody (upper) or p53 Antibody #9282 (lower). IHC-P (paraffin)
Immunohistochemical analysis of paraffin-embedded human renal cell carcinoma, untreated (left) or λ phosphatase-treated (right), using Phospho-Rpb1 CTD (Ser2/5) Antibody. IHC-P (paraffin)
Immunohistochemical analysis of paraffin-embedded human lung carcinoma, showing nuclear localization, using Phospho-Rpb1 CTD (Ser2/5) Antibody. IHC-P (paraffin)
Immunohistochemical analysis of paraffin-embedded human colon carcinoma, using Phospho-Rpb1 CTD (Ser2/5) Antibody in the presence of control peptide (left) or antigen-specific peptide (right). |
| Background | RNA polymerase II is a complex of 12 proteins that participates in transcription, mRNA processing, and transcription-coupled DNA repair (1,2). The largest subunit, Rpb1, contains a unique heptapeptide: Tyr1, Ser2, Pro3, Thr4, Ser5, Pro6, Ser7, which is repeated up to 52 times in the carboxy-terminal domain (CTD) of Rpb1 (3). This CTD is phosphorylated by cyclin-dependent kinases (CDKs), p44/42 MAPK, DNA-PKcs, and c-Abl (4). DNA damage caused by UV-light, hydrogen peroxide, or cisplatin results in ubiquitination and proteasomal degradation of Rpb1 (1,3). The kinase inhibitor 5,6-dichloro-1-β-D-ribofuranosylbenzimidazole prevents ubiquitination of Rpb1, suggesting that CTD phosphorylation is required for proteolysis (5). |
| Application References | Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know ! |
| Companion Products |
For Research Use Only. Not For Use In Diagnostic Procedures. |
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