When Pi is released from myosin
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it cannot interact with actin. |
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the troponin binding sites are exposed. |
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the power stroke occurs. |
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the actin nucleotide binding sites are exposed. |
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calcium is released from the nucleus. |
Answer: the power stroke occurs
ATP prepares myosin for binding with actin. After the formation of cross bridge the Pi dissociates and myosin undergoes powerstroke and the sarcomere shortens.
When Pi is released from myosin it cannot interact with actin. the troponin binding sites are...