Can an actin filament exist with all subunits of ADP-actin? Please explain your reasoning.
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Can an actin filament exist with all subunits of ADP-actin - NO
Explanation:
- Actin is a sub-unit of the muscle protein. It is a part of muscle filament, participating actively in the muscle contraction.
- Actin participates in the muscle contraction as two sub-units – G and F actin.
- These three sub-units have different works to do. And, during the contraction, they convert a molecule from ATP to ADP.
- This leads to the contraction. But, the phase difference is such that during the phase when the ATP binds with the Actin, they remain together.
- But, when the ATP catalyzes to ADP, the Actin sub-units separate. Thus, during ADP actin, the sub-units remain separated.
To learn more about muscle contraction:
Define the important step in muscle contraction
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Explain mechanism of muscle contraction..briefly
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