PX domains bind to phosphoinositides.

1: Novel domains in NADPH oxidase subunits, sorting nexins, and PtdIns 3-kinases: binding partners of SH3 domains? Ponting CP; Protein Sci 1996;5:2353-2357. PMID:8931154

2: Phoxy lipids: revealing PX domains as phosphoinositide binding modules. Wishart MJ, Taylor GS, Dixon JE; Cell 2001;105:817-820. PMID:11439176

3: Binding of the PX domain of p47(phox) to phosphatidylinositol 3,4-bisphosphate and phosphatidic acid is masked by an intramolecular interaction. Karathanassis D, Stahelin RV, Bravo J, Perisic O, Pacold CM, Cho W, Williams RL; EMBO J 2002;21:5057-5068. PMID:12356722

4: Phosphorylation of p47phox directs phox homology domain from SH3 domain toward phosphoinositides, leading to phagocyte NADPH oxidase activation. Ago T, Kuribayashi F, Hiroaki H, Takeya R, Ito T, Kohda D, Sumimoto H; Proc Natl Acad Sci U S A 2003;100:4474-4479. PMID:12672956

5: Solution structure of the PX domain, a target of the SH3 domain. Hiroaki H, Ago T, Ito T, Sumimoto H, Kohda D; Nat Struct Biol 2001;8:526-530. PMID:11373621