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6 Cards in this Set
- Front
- Back
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Do myosin Heads bind randomly to sites on the actins?
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There are specific sites on the actin chain to where myosin head binds. They are called myosin binding sights.
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Mysin are protected by?
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Troponin sights are protected by a protein called troponin
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Location of Troponin?
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The protein Troponin is located on the actin filament and covers the sights where myosin binds to.
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During muscle relaxation what happens?
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During muscle relaxation the binding sites for the myasin heads located on the actin filament is protedted by the troponin.
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During muscle contraction what happens?
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Calcium is released and binds to Troponin thus, uncovering the binding sight of Myosin. Now the Myosin head can bind to actin causing contraction of the muscle.
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How Does ATP Help the interaction of myosin troponin and actin.
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The interaction requires ATP. the phosphate is used as an energy source for the myosin head to bind to actin
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