Their structures, like their functions, vary greatly. Each cell in a living system may contain thousands of proteins, each with a unique function. They may serve in transport, storage, or membranes or they may be toxins or enzymes. Proteins may be structural, regulatory, contractile, or protective. Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Describe the ways in which protein shape and function are linked.Explain the four levels of protein organization.Discuss the relationship between amino acids and proteins.
Describe the functions proteins perform in the cell and in tissues.By the end of this section, you will be able to do the following:
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