What is the role of peripheral proteins after a vesicle fuses with the cell membrane?

The role of peripheral proteins after a vesicle fuses with the cell membrane is to be added to the membrane. When a vesicle containing proteins fuses with the cell membrane, some of these proteins, particularly peripheral ones, integrate into the cell membrane. Peripheral proteins are associated with the membrane but do not span the lipid bilayer like integral proteins. They can attach to the membrane on either the extracellular or cytoplasmic side, which is essential for various cellular functions.

Once added to the membrane, these proteins can participate in signaling pathways, help maintain the cell's shape by interacting with the cytoskeleton, or assist in the regulation of membrane fluidity and structure. Their addition to the membrane is a key aspect of membrane dynamics, which facilitates communication and allows the cell to respond to its environment effectively.

In contrast, the other options do not accurately reflect the typical behavior of peripheral proteins post-fusion. They do not remain floating in the cytosol, nor do they typically become part of the cytoskeleton; rather, they may interact with it but do not become structural components. While some peripheral proteins can have enzymatic functions, that is not their primary role after fusing with the membrane. The integration of peripheral proteins into the membrane