The giant protein titin maintains the organization of the ________ assisting in muscle stretching.

Question

Quizplus · Accepted Answer

Titin (also known as connectin) is a gigantic protein that spans half the length of a sarcomere (the basic unit of striated muscle cell) from the Z disc to the M line. The A band is the region in a sarcomere where thick filaments overlap with thin filaments, and it is the region where the titin filaments bind with the thick filament and stretch when the muscle is extended. Therefore, the best choice is A) A band.

The Giant Protein Titin Maintains the Organization of the ________