The phosphatidylinositol phosphates represent a small percentage of total membrane phospholipids, but they play a crucial role in the generation and transmission of cellular signals. PtdIns-(3,4,5)-P3 can serve as an anchor for the binding of signal transduction proteins bearing pleckstrin homology (PH) domains. Centuarin α and the Akt-family of GTPase activating proteins are examples of PtdIns-(3,4,5)-P3-binding proteins. Protein-binding to PtdIns-(3,4,5)-P3 is important for cytoskeletal rearrangements and membrane trafficking. PtdIns-(3,4,5)-P3 is resistant to cleavage by PI-specific phospholipase C (PLC). Therefore, it is likely to function in signal transduction as a modulator in its own right, rather than as a source of inositol tetraphosphates.
1. Lapetina, E.G., et al. 1981. Nature. 292: 367-369. PMID: 626579
2. Majerus, P.W. 1992. Annu. Rev. Biochem. 61: 225-250. PMID: 1323235
3. Tanaka, K., et al. 1997. Eur. J. Biochem. 245: 512-519. PMID: 9151987
4. Yang, X., et al. 1999. J. Biol. Chem. 274: 18973-18980. PMID: 10383396
5. Pike, L.J. and Casey, L. 1996. J. Biol. Chem. 271: 26453-26456. PMID: 8900109
6. Berridge, M.J. 1993. Nature. 361: 315-325. PMID: 8381210
Santa Cruz Biotechnology, Inc. is a world leader in the development of products for the biomedical research market. Call us Toll Free at 1-800-457-3801.
Copyright © 2007-2021 Santa Cruz Biotechnology, Inc. All Rights Reserved. "Santa Cruz Biotechnology", and the Santa Cruz Biotechnology, Inc. logo, "Santa Cruz Animal Health", "San Juan Ranch", "Supplement of Champions", the San Juan Ranch logo, "Ultracruz", "Chemcruz", "Immunocruz", "Exactacruz", and "EZ Touch" are registered trademarks of Santa Cruz Biotechnology, Inc.
All trademarks are the property of their respective owners.