p21 Cip1 antibody - cyclin-dependent kinase inhibitor 1A (p21, Cip1), 1 ml supplied

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About P21 Cip1 Antibody - Cyclin-dependent Kinase

Rabbit Polyclonal antibody to p21 Cip1. Cell cycle progression is regulated by cyclins and their cognate Cdks (1-3). p21 (WAF1/Cip1) inhibits the activity of each member of the cyclin/Cdk family and over expression of this protein inhibits the proliferation of mammalian cells (5). The expression of p21 is inducible by a wide range of stress stimuli and its transcription can be enhanced by p53 (6). Another member of the CDIs is p27 (also known as Kip1), which also sees up regulation in response to antimitogenic stimuli (7). The increased protein expression of p27 results in cellular arrest by binding to cyclin/Cdk complexes, like cyclin D1/Cdk4 (4,8). An additional CDI has been found to bind Cdk4 and Cdk6, p16 (INK4A), and when such complexes are formed, the progression of the cell cycle is halted (9). It has become increasingly clear that p16 is a very important tumor suppressor gene whose frequent loss occurs early in many human cancers. p16 is a major target in carcinogenesis that is rivaled in frequency only by p53 (10). Store this product at 4 °C, do not freeze. The product is stable for one year from the date of shipment.