Research ArticleOpen accessPhrase in the titleThe Biology of p21Waf1/Cip1 - Review PaperRenald A. Blundellp21WAF1/Cip1 belongs to the Cip/Kip family of cyclin kinase inhibitors (CKI) (p21Waf1/Cip1, p27Kip1, p57Kip1). p21Waf1/Cip1 was first described as a potent and universal inhibitor of cyclin-dependent kinases (Cdks). Two forms of functionally active p21 has been localized and described: a nuclear and a cytoplasmic forms. In this paper the structures of p21 has been described and as well as it … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 1 · 31 Mar 2006 · 7,012 accessesView PDFCite