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It is involved in the regulation of the contraction of a cross-striated muscle.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoCa++
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What ions serve as a trigger for muscle contractions by removing the inhibition of the troponin molecule?
Calcium ions
Is Troponal and troponin the same thing?
No, they are not. Troponal is a mild opioid pain medication. Troponin is one of the sliding filaments used in muscle contractions. Troponin is a globular protein which binds tropomyosin to G actin and is controlled by Ca++.
What is the molecular composition of troponin?
Troponin is a major component of muscle tissue. It is composed of troponin C, troponin I, and troponin T. Troponin interacts with tropomyosin and myosin to create muscle contraction.
What binds calcium ions in a smooth muscle causing contraction?
Contractions are initiated by the calcium-activated phosphorylation of myosin rather than calcium binding to troponin.
During muscle contraction....... attach to ...............?
Troponin
During muscle contraction calcium attaches to what?
Troponin
What is the function of the calcium in the sarcoplasm?
Calcium is released from the sarcoplasm to bind with the troponin which allows the tropomyosin the reveal the binding sites on the actin so the muscle can contract
Where troponin is found?
Troponin is one of the intracellular proteins found primarily in skeletal muscle fibers, where it is part of the contractile proteins.
What Steps in muscle contraction require calcium ions?
Calcium ions bind to troponin, changing troponin's shape
What is the function of troponin?
Troponin is attached to the protein tropomyosin and lies within the groove between actin filaments in muscle tissue. In a relaxed muscle, tropomyosin blocks the attachment site for the myosin crossbridge, thus preventing contraction. When the muscle cell is stimulated to contract by an action potential, calcium channels open in the sarcoplasmic reticulum and release calcium into the sarcoplasm. Some of this calcium attaches to troponin, causing a conformational change that moves tropomyosin out of the way so that the cross bridges can attach to actin and produce muscle contraction.
What are the thin filaments in a muscle made of?
actin, troponin, tropomyosinMyosin
A protein that binds the calcium in smooth muscle?
calmodulin
