Cell membranes are fluid, and thus proteins can diffuse laterally within the lipid bilayer. However, sometimes the cell needs to localize proteins to a particular membrane domain. Name three mechanisms that a cell can use to restrict a protein to a particular place in the cell membrane.
What will be an ideal response?
Proteins can be tethered to the cortex inside the cell
Proteins can be tethered to the ECM outside the cell
Diffusion barriers
Proteins on the surface of another cell
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