The cation-pi box is a specific phosphatidylcholine membrane targeting motif.
Cheng, J., Goldstein, R., Gershenson, A., Stec, B., Roberts, M.F.(2013) J Biol Chem 288: 14863-14873
- PubMed: 23576432 
- DOI: 10.1074/jbc.M113.466532
- Primary Citation of Related Structures:  
4I8Y, 4I90, 4I9T, 4I9M, 4I9J - PubMed Abstract: 
Peripheral membrane proteins can be targeted to specific organelles or the plasma membrane by differential recognition of phospholipid headgroups. Although molecular determinants of specificity for several headgroups, including phosphatidylserine and phosphoinositides are well defined, specific recognition of the headgroup of the zwitterionic phosphatidylcholine (PC) is less well understood ...