Table 5.
Percentage values of sarcomeric protein markers and their indication for either slow or fast fibers in all four skeletal muscle fiber types (type I, type IIa, type IIb, and type IIx).
| Protein Names | Indicative For | % Type I | % Type IIa | % Type IIb | % Type IIx |
|---|---|---|---|---|---|
| Alpha-actinin-2 | Slow | 2.60 | 1.89 | 0.39 | 1.15 |
| Alpha-actinin-3 | Fast | 0.10 | 0.10 | 0.93 | 0.63 |
| Myomesin 2 | Fast | 0.05 | 0.11 | 0.36 | 0.34 |
| Myomesin-1 | Slow | 0.04 | 0.02 | 0.00 | 0.00 |
| Myosin-binding protein C. slow type | Slow | 0.09 | 0.09 | 0.04 | 0.06 |
| Myosin-binding protein C. fast type | Fast | 0.08 | 0.11 | 0.64 | 0.33 |
| Myozenin-1 | Fast | 0.10 | 0.19 | 0.30 | 0.31 |
| Myozenin-2 | Slow | 0.20 | 0.14 | 0.01 | 0.02 |
| Troponin C. slow skeletal and cardiac muscles (TN-C) | Slow | 0.45 | 0.17 | 0.00 | 0.00 |
| Troponin I. fast skeletal muscle (troponin I. fast-twitch isoform) | Fast | 0.06 | 0.12 | 0.23 | 0.26 |