Immunofluorescent analysis of p21/Cip1 showing staining in the nucleus of HCT116 cells. HCT116 cells mock and treated with 30µM cisplatin for 24hr and were fixed in 4% paraformaldehyde at RT for 15 min and stained using a p21/Cip1 polyclonal antibody (Product # PA5-34805) diluted at 1:500. Blue: Hoechst 33342 staining. Scale bar = 10µm.
|Tested species reactivity||Human|
|Host / Isotype||Rabbit / IgG|
|Immunogen||Recombinant fragment corresponding to a region within amino acids 1 and 164 of p21 (Uniprot ID#P38936)|
|Purification||Antigen affinity chromatography|
|Storage buffer||0.1M tris glycine, pH 7, with 10% glycerol|
|Storage Conditions||-20° C, Avoid Freeze/Thaw Cycles|
|Tested Applications||Dilution *|
|Immunohistochemistry (Paraffin) (IHC (P))||1:100-1:1000|
|Western Blot (WB)||1:500-1:3000|
* Suggested working dilutions are given as a guide only. It is recommended that the user titrate the product for use in their own experiment using appropriate negative and positive controls.
IHC notes, Requires antigen retrieval using heat mediated 10mM Citrate buffer (pH6.0) or Tris-EDTA buffer (pH8.0)
This gene encodes a potent cyclin-dependent kinase inhibitor. The encoded protein binds to and inhibits the activity of cyclin-CDK2 or -CDK4 complexes, and thus functions as a regulator of cell cycle progression at G1. The expression of this gene is tightly controlled by the tumor suppressor protein p53, through which this protein mediates the p53-dependent cell cycle G1 phase arrest in response to a variety of stress stimuli. This protein can interact with proliferating cell nuclear antigen (PCNA), a DNA polymerase accessory factor, and plays a regulatory role in S phase DNA replication and DNA damage repair. This protein was reported to be specifically cleaved by CASP3-like caspases, which thus leads to a dramatic activation of CDK2, and may be instrumental in the execution of apoptosis following caspase activation. Multiple alternatively spliced variants have been found for this gene.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.