Cell Membrane

            Cell membranes (also known as plasma membranes (PM) or cytoplasmic membranes and historically known as plasma membranes) are biological membranes that separate the insides of all cells from the outside environment (extracellular space) and protect cells from their environment. The cell membrane consists of a cholesterol lipid bilayer (lipid component), which is located between the phospholipids to maintain their fluidity at different temperatures. Membranes also contain membrane proteins, including integral proteins that pass through the membrane and function as membrane transporters, and peripheral proteins that are free to attach to the outer (peripheral) cell membranes and act as enzymes that make up cells. Cell membranes control the movement of substances in cells and organelles. Therefore it can be selectively penetrated by organic ions and molecules. In addition, cell membranes are involved in various cellular processes such as cell adhesion, ion conductivity, and cellular signaling, and function as binding surfaces for several extracellular structures, including cell walls, carbohydrate layers called Glycocalyx, and intracellular protein fiber networks. In the field of synthetic biology, cell membranes can be artificially put together.

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