Liu L, Song X, He D, Komma C, Kita A, Virbasius JV, Huang G, Bellamy HD, Miki K, Czech MP, Zhou GW. Crystal structure of the C2 domain of class II phosphatidylinositide 3-kinase C2alpha. J Biol Chem. 2006 Feb 17; 281(7):4254-60.