Construct: Amino acid replacement: G7A. Amino acid replacement: A7T.
Retards sarcomere assembly: peripheral thick and thin filaments are misregistered and do not incorporate into the Z-line. A myosin filament encounters thin filaments with the wrong polarity. Myosin heads can bind to the thin filaments by swivelling 180o relative to each other, implying that myosin bridges are as flexible as isolated molecules.