| Answer | Crossword Clue |
|---|---|
| troponin | protein of muscle tissue that binds calcium ions and is involved in contraction |
| tropomyosin | A protein involved in muscle contraction. It is related to myosin and occurs together with troponin in the thin filaments of muscle tissue |
| calmodulin | A protein that binds calcium and is involved in regulating a variety of activities in cells |
| calpain | protein that is activated by calcium ions in some synapses and in erythrocytes can affect proteins important in determining cellular shape and deformability; calcium-activated neutral protease |
