p21 Waf1/Cip1 (12D1) Rabbit mAb (Alexa Fluor® 647 Conjugate) #8587
- IF
- F
Supporting Data
| REACTIVITY | H Mk |
| SENSITIVITY | Endogenous |
| MW (kDa) | |
| Source/Isotype | Rabbit IgG |
Application Key:
- IF-Immunofluorescence
- F-Flow Cytometry
Species Cross-Reactivity Key:
- H-Human
- Mk-Monkey
Product Information
Product Description
Product Usage Information
| Application | Dilution |
|---|---|
| Immunofluorescence (Immunocytochemistry) | 1:400 - 1:1600 |
| Flow Cytometry (Fixed/Permeabilized) | 1:50 |
Storage
Protocol
Specificity / Sensitivity
p21 Waf1/Cip1 (12D1) Rabbit mAb (Alexa Fluor® 647 Conjugate) detects endogenous levels of total p21 protein. The antibody does not cross-react with other CDK inhibitors.
Species Reactivity:
Human, Monkey
The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.
Species predicted to react based on 100% sequence homology:
Dog
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human p21 protein.
Background
The tumor suppressor protein p21 Waf1/Cip1 acts as an inhibitor of cell cycle progression. It functions in stoichiometric relationships forming heterotrimeric complexes with cyclins and cyclin-dependent kinases. In association with CDK2 complexes, it serves to inhibit kinase activity and block progression through G1/S (1). However, p21 may also enhance assembly and activity in complexes of CDK4 or CDK6 and cyclin D (2). The carboxy-terminal region of p21 is sufficient to bind and inhibit PCNA, a subunit of DNA polymerase, and may coordinate DNA replication with cell cycle progression (3). Upon UV damage or during cell cycle stages when cdc2/cyclin B or CDK2/cyclin A are active, p53 is phosphorylated and upregulates p21 transcription via a p53-responsive element (4). Protein levels of p21 are downregulated through ubiquitination and proteasomal degradation (5).
Limited Uses
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