Protein structure determines function >Proteins are single,unbranched chains of amino acid monomers >There are 20 different amino acids >A protein's amino acid sequence determines its three- dimensional structure(conformation) >In turn,a protein's structure determines the function of that protein >Four levels of structure determine the shape of proteinsProtein structure determines function ➢ Proteins are single, unbranched chains of amino acid monomers ➢ There are 20 different amino acids ➢ A protein’s amino acid sequence determines its three￾dimensional structure (conformation) ➢ In turn, a protein’s structure determines the function of that protein ➢ Four levels of structure determine the shape of proteins