Clone Number: WA-1
Immunogen: Human p21 protein
Concentration: 1 mg/ml
Format: Purified by protein-A affinity chromatography.
Storage buffer: Phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide
Additional info: The tumour suppressor p21Waf1 (wild-type p53-activated fragment 1; also known as Cip1, Cdk interacting protein, or SDI 1) is a cyclin-dependent kinase (Cdk) inhibitor, which is expressed by involvement of p53, Egr-1, AP2, STATs or other transcription factors upon various stimuli resulting in cell cycle arrest. Through its N-terminal domain p21Waf1 inhibits Cdk activity, whereas through the C-terminal domain it inhibits the activity of PCNA (proliferating cell nuclear antigen) to activate DNA replication. Cytosolic location of p21 counteracts its inhibitory activities.SpecificityThe mouse monoclonal antibody PANp63-6.1 recognizes both TAp63, and deltaNp63 form of p63. The target epitope PSHLIR is located within amino acids 261-266 of TAp63, and 167-172 of deltaNp63.Application detailsImmunohistochemistry (paraffin sections): Positive tissue: colon carcinoma.