Calcium is important in skeletal muscle contr | vedclass

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(B) During skeletal muscle contraction,the binding of $Ca^{2+}$ ions to the $Troponin$ complex is a critical step.In a relaxed state,the active sites

Vedclass · Accepted Answer

Binds to troponin to remove the masking of active sites on actin.

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(B) During skeletal muscle contraction,the binding of $Ca^{2+}$ ions to the $Troponin$ complex is a critical step.In a relaxed state,the active sites on the actin filament are masked by the $Tropomyosin$ protein.When $Ca^{2+}$ ions are released from the sarcoplasmic reticulum,they bind to $Troponin$.This binding causes a conformational change in the $Troponin-Tropomyosin$ complex,which shifts the $Tropomyosin$ away from the active sites on the actin filament.This exposure allows the myosin heads to bind to the actin,forming cross-bridges and initiating muscle contraction.

Calcium is important in skeletal muscle contraction because it

Similar Questions

Relaxation of the muscle takes place due to
$I.$ Pumping of $Ca^{2+}$ ions into the sarcoplasmic reticulum
$II.$ Presence of $ATP$
$III.$ Conformational changes in troponin and masking of the actin filament
Which of the following options contains the correct statements?

Sarcoplasmic reticulum is present in which structure:

Identify the odd one out from the following list.

Actin and myosin proteins are related with

Bone-dissolving cells are known as..........

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