Membrane proteins perform various functions crucial to cell survival and intercellular communication. These include:
Transport: Proteins such as channels and carriers facilitate the transport of ions and molecules across the membrane. Receptors: Some proteins act as receptors, binding to specific molecules like hormones and triggering intracellular responses. Enzymatic Activity: Certain membrane proteins function as enzymes, catalyzing reactions at the membrane surface. Cell Recognition: Glycoproteins play a role in cell recognition, allowing cells to identify and interact with each other. Structural Support: Some proteins provide structural support, maintaining cell shape and integrity.