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==Introduction== | ==Introduction== | ||
[[Image:Actin myosin anim.gif]] | [[Image:Actin myosin anim.gif]] | ||
| + | Muscle contraction is achieved by the sliding of myosin filament (thick filament) and actin filament (thin filament). As the major constituent of myosin filament, a myosin molecule is a multifunctional protein, which has a ATP catalytic site and a actin binding site on each of the globular subfragment-1 unit. With the presence of Ca and Mg, ATP ís able to be hydrolyzed and triggers following myosin-actin detachment, reattachment and power stroke. This process transformed chemical energy to mechanical force. | ||
==Different Structural Conformations of the Scallop Myosin Head== | ==Different Structural Conformations of the Scallop Myosin Head== | ||
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Scallop myosin head in its rigor state, detached state and pre power stroke state
Introduction
Muscle contraction is achieved by the sliding of myosin filament (thick filament) and actin filament (thin filament). As the major constituent of myosin filament, a myosin molecule is a multifunctional protein, which has a ATP catalytic site and a actin binding site on each of the globular subfragment-1 unit. With the presence of Ca and Mg, ATP ís able to be hydrolyzed and triggers following myosin-actin detachment, reattachment and power stroke. This process transformed chemical energy to mechanical force.
Different Structural Conformations of the Scallop Myosin Head
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