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What provides the energy to break the connection between actin and myosin?
Wiki User
∙ 11y ago
ATP, of course.
When the myosin head extends towards the actin thin filament it has in it's active site ADP and P +. So, when the stroke is over the ADP and P+ fall out and are replaced by ATP, which immediately metabolizes to ADP and P +.
Wiki User
∙ 11y ago
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When does the myosin head cock back to store energy for the next cycle?
After the myosin head detaches, energy from ATP hydrolysis is used to re-cock the myosin head.
Flexing the head of this molecule provides what is known as the?
Power stroke
What is the crossbridge cycle?
The crossbridge cycle is the cyclical formation of links between actin and myosin. This results in the sliding of thin filaments towards the M line of a sarcomere. The myosin head undergoes conformation changes which allows it to swivel back and forth. In its low energy form, myosin has a low affinity for actin. The ATP prepares myosin for binding with actin by moving it to its high energy form position. When myosin contracts, it has a high affinity for actin.
What molecule directly supplies energy to myosin to allow the filaments to contract?
ATP
Are myosin filaments located in an A band?
Thick - it is the length of myosin.
What is the compound that binds myosin and provides energy for the power stroke?
a flowery anus
What is a temporary connection between actin and myosin heads?
Cross bridge
Difference between actin and myosin?
Myosin is a molecular motor that converts ATP to energy. Actin is responsible for cell movement and uses energy from the ATP conversion done by myosin..
When does the myosin head cock back to store energy for the next cycle?
After the myosin head detaches, energy from ATP hydrolysis is used to re-cock the myosin head.
What are the thick protein filaments in the cell made of?
The thick filament is composed of the myosin molecule. The thin filament is composed of the actin molecule. Flexing the head of myosin provides the powerstroke.
Flexing the head of this molecule provides what is known as the?
Power stroke
What substances causes the myosin head to change shape?
The myosin head changes shape mid-reaction, when the energy released by hydrolysis of ATP is absorbed by the myosin head.
How does myosin head obtain the energy required for activation?
The energy comes from the hydrolysis of ATP
What is the crossbridge cycle?
The crossbridge cycle is the cyclical formation of links between actin and myosin. This results in the sliding of thin filaments towards the M line of a sarcomere. The myosin head undergoes conformation changes which allows it to swivel back and forth. In its low energy form, myosin has a low affinity for actin. The ATP prepares myosin for binding with actin by moving it to its high energy form position. When myosin contracts, it has a high affinity for actin.
An energy molecule that facilitates the sliding motion of actin and myosin?
ATP
What is the role of myosin APT ase in muscle contraction?
Myosin ATPase hydrolyze ATP into ADP+pi and yielding the energy required for muscle contraction.
What molecule directly supplies energy to myosin to allow the filaments to contract?
ATP
