Phosphoinositides recruit proteins to distinct intracellular membranes. Now, the Phox homology (PX) domain, an evolutionarily conserved protein domain whose function has so far been elusive, has been demonstrated to bind phosphoinositides. The interactions of PX-domain-containing proteins with specific phosphoinositides are critical for cellular activities such as microbial killing and membrane trafficking.
- Anne Simonsen
- Harald Stenmark
