| PI | Phosphatidylinositol |
| PI4P | Phosphatidylinositol 4-phosphate |
| PI(4,5)P2 | Phosphatidylinositol 4,5-bisphosphate |
| PI(3,5)P2 | phosphatidylinositol 3,5-bisphosphate |
| PI(3,4,5)P3 | Phosphatidylinositol 3,4,5-trisphosphate |
| diC8-PI | Dioctanoylglycerol-phosphoinositide |
| VSP | Voltage-sensitive phosphatase |
| CaMKII | Ca2+/calmodulin-dependent protein kinase II |
| I Inst | Instantaneous current |
| I Slw | Slow current |
| FKBP | FK506 binding protein |
| FRB | Rapamycin-binding domain of mTOR |
| RF | mRFP-FKBP |
| INPP5E | Inositol pholyphosphate-5-phosphatase E |
| PJ | Pseudojanin |
| PTEN | Phosphatase and tensin homolog |
| CaCC | Ca2+-activated Cl− channel |
| PIPKIγ | PIP 5-kinase Type Iγ |
| Dr-VSP | Danio rerio VSP |
| Gq-GPCRs | Gq protein-coupled receptors |
| PH(PLCδ1) | Pleckstrin homology domain of phospholipase C-δ1 |