Phosphoinositide 3-kinases (PI(3)Ks) are mainly known for their lipid kinase activity in various cellular functions; however, PI(3)Ks also have protein kinase activity. Non-muscle tropomyosin has been identified as a novel protein target for PI(3)Kγ. Phosphorylation of tropomyosin is required for β-adrenergic receptor internalization, providing new insight into PI(3)K function during clathrin-mediated endocytosis.
References
Naga Prasad, S. V. et al. J. Cell Biol. 158, 563–575 (2002).
Naga Prasad, S. V., Jayatilleke, A., Madamanchi, A. & Rockman, H. A. Nature Cell Biol. 7, 785–796 (2005).
Walker, E. H., Perisic, O., Ried, C., Stephens, L. & Williams, R. L. Nature 402, 313–320 (1999).
Dhand, R. et al. EMBO J. 13, 522–533 (1994).
Vanhaesebroeck, B. et al. EMBO J. 18, 1292–1302 (1999).
Czupalla, C. et al. J. Biol. Chem. 278, 11536–11545 (2003).
Lam, K., Carpenter, C. L., Ruderman, N. B., Friel, J. C. & Kelly, K. L. J. Biol. Chem. 269, 20648–20652 (1994).
Bondeva, T. et al. Science 282, 293–296 (1998).
Shenoy, S. K. & Lefkowitz, R. J. Biochem. J. 375, 503–515 (2003).
Perry, S. V. Vertebrate tropomyosin: distribution, properties and function. J. Muscle Res. Cell Motil. 22, 5–49 (2001).
Engqvist-Goldstein, A. E. & Drubin, D. G. Annu. Rev. Cell Dev. Biol. 19, 287–332 (2003).
Blanchoin, L., Pollard, T. D. & Hitchcock-DeGregori, S. E. Curr. Biol. 11, 1300–1304 (2001).
DesMarais, V., Ichetovkin, I., Condeelis, J. & Hitchcock-DeGregori, S. E. J. Cell Sci. 115, 4649–4660 (2002).
Gunning, P. W., Schevzov, G., Kee, A. J. & Hardeman, E. C. Trends Cell Biol. 15, 333–341 (2005).
Rickert, P., Weiner, O. D., Wang, F., Bourne, H. R. & Servant, G. Trends Cell Biol. 10, 466–473 (2000).
Laffargue, M. et al. Immunity 16, 441–451 (2002).
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Backer, J. Substrate specificity: PI(3)Kγ has it both ways. Nat Cell Biol 7, 773–774 (2005). https://doi.org/10.1038/ncb0805-773
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DOI: https://doi.org/10.1038/ncb0805-773
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