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Functions of membrane proteins can also include cellâcell contact, surface recognition, cytoskeleton contact, signaling, enzymatic activity, or transporting substances across the membrane.
different carrier proteins facilitate the diffusion of different molecules. how do carrier proteins move large molecules in and out of the cell. -first a large molecule attaches to a carrier protein in the membrane. -then the protein changes shape. -this releases the molecule on the opposite side of the membrane. what do channel proteins do in facilitated diffusion.