If a patient has a mutation disrupting a peripheral membrane protein that anchors spectrin, what is most likely true?

If a patient has a mutation disrupting a peripheral membrane protein that anchors spectrin, what is most likely true?

• A. The cells are more capable of maintaining their shape
• B. The cells are more resistant to damage
• C. The structure of the cell cortex is unchanged
• D. None of the above statements are true

Answer: (D)

A mutation that disrupts a peripheral membrane protein responsible for anchoring spectrin would likely compromise the structural integrity of the cell cortex. Spectrin is a key component of the cytoskeleton in cells, particularly in red blood cells, where it forms a mesh-like structure that helps maintain their biconcave shape and overall stability. Without the proper anchoring of spectrin, the organization of the cell cortex would be affected, leading to alterations in the cell's shape and potentially resulting in increased vulnerability to mechanical stress and damage. Since the mutation disrupts the anchoring mechanism, the cell would be less capable of maintaining its shape, more susceptible to damage, and the structural organization of the cell cortex would indeed be changed. Therefore, none of the statements provided accurately reflect the implications of the mutation, making the conclusion that none of the above statements are true the most appropriate.

A mutation that disrupts a peripheral membrane protein responsible for anchoring spectrin would likely compromise the structural integrity of the cell cortex. Spectrin is a key component of the cytoskeleton in cells, particularly in red blood cells, where it forms a mesh-like structure that helps maintain their biconcave shape and overall stability.

Without the proper anchoring of spectrin, the organization of the cell cortex would be affected, leading to alterations in the cell's shape and potentially resulting in increased vulnerability to mechanical stress and damage. Since the mutation disrupts the anchoring mechanism, the cell would be less capable of maintaining its shape, more susceptible to damage, and the structural organization of the cell cortex would indeed be changed.

Therefore, none of the statements provided accurately reflect the implications of the mutation, making the conclusion that none of the above statements are true the most appropriate.