In skeletal muscle cells _______________ is responsible for the flux of Ca²⁺ from the cytosol to the lumen of the sarcoplasmic reticulum. A) calmodulin-dependent protein kinase B) Ca²⁺ - ATPase C) nitric oxide synthase D) phospholipase C-beta E) protein kinase C

Question

Quizplus · Accepted Answer

The Ca²⁺ - ATPase, also known as the SERCA pump, is responsible for actively transporting Ca²⁺ ions from the cytosol to the sarcoplasmic reticulum lumen, where they can be stored and released upon muscle contraction. This process is essential for muscle relaxation and is dependent on ATP hydrolysis for energy. The other choices listed are not directly involved in this process.

In Skeletal Muscle Cells _______________ Is Responsible for the Flux