| CPI-17 | Phosphorylation-dependent inhibitory protein of myosin phosphatase |
| PKC | Protein kinase C |
| MLC20 | 20-kDa regulatory light chain of myosin |
| MLCP | Myosin light chain phosphatase |
| [Ca2+]i | Intracellular calcium concentration |
| VSMCs | Vascular smooth muscle cells |