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| Arrangement of Myosin |
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| Molecules in Thick Filaments |
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| • | bipolar
polymer of myosin |
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| • | myosin
tails align and point to center of sarcomere |
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| • | myosin
heads arranged in a helical pattern pointing away from |
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| center |
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| • | myosin
heads reach out from the thick filaments to contact the |
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| actin
filaments |
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| • | contain
~300 molecules of myosin |
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