The structure of a sarcomere. A schematic representation of a sarcomere with Cy3-ATP (green) attachments to the myosin-containing thick filaments (purple). The thin filament is shown in pink and is decorated with troponin and tropomyosin (not shown). The thick filament can be subdivided into P-, C-, and D-zones, depending on their MyBP-C occupancy. The M-line is centrally located between the terminal Z-discs. Please also see Fig. 2 a. Created using BioRender.com.