This antibody recognizes a 21kDa protein, identified as the p21WAF1 tumor suppressor protein. This antibody is highly specific to p21 and shows no cross-reaction with other closely related mitotic inhibitors. p21WAF1 is a specific inhibitor of cdks and a tumor suppressor involved in the pathogenesis of a variety of malignancies. The expression of this gene acts as an inhibitor of the cell cycle during G1 phase and is tightly controlled by the tumor suppressor protein p53. Its expression is induced by the wild type, but not mutant, p53 suppressor protein. Normal cells generally display a rather intense nuclear p21 expression. Loss of p21 expression has been reported in many carcinomas (gastric carcinoma, non-small cell lung carcinoma, thyroid carcinoma).
Applications
IF, WB, IHC-P
Dilutions
IF: 1-2 µg/ml, WB: 1-2 µg/ml, IHC-P: 2-4 µg/ml
Reactivity
Human
Cross Reactivity
This antibody does not cross react with Mouse or Rat.
Immunogen
Recombinant full-length human CDKN1A protein.
Host
Mouse
Clonality
Monoclonal
Clone ID
CIP1/823
Isotype
IgG2a
Light Chains
kappa
Conjugate
Unconjugated
Purification
Protein A/G chromatography.
Concentration
1 mg/ml
Molecular Weight
21 kDa
Product Form
Liquid
Formulation
Supplied in 10mM Phosphate Buffered Saline; without Sodium Azide and carrier free.
Storage
Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.
Immunofluorescent analysis of HeLa cells stained with Anti-p21 Antibody [CIP1/823] followed by Goat Anti-Mouse IgG (CF® 555) (Red). Membrane stained with Phalloidin 488 (Green).
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