Some form very strong disulfide binds with other amino acids in other parts of the protein giving them a sharp bend. This chemical and structural distinctiveness is what makes an enzyme specialized to catalyze one specific kind of reaction. How does polar fish enzyme structure enable them to work at low temperature. According to the Fluid Mosaic Model, the cell membrane is mostly composed of a bilayer of phospholipids. Scattered through this bilayer is a mosaic of proteins with a variety of functions.
Some membrane proteins are enzymes.
Others carry important molecules in or out of a cell. These need to be able to change shape in order to do their job. Dec 5 1. In order for most membrane proteins to work they need to be able to change shape. In order for this to happen, they and the lipid membrane around them, must be flexible.