Protein structures have multiple levels of complexity. Explain the concepts of secondary, tertiary and quaternary structure in the generation of the structure of a native protein.
Secondary structure is generated by rotation about phi and psi bonds.
Explain how the covalent bonds in a polypeptide chain can generate regular secondary structures. Recognize the characteristics of these structures. Motifs and domains are generated in proteins by arrangement of secondary structure. Define the concept of domain. Predict the placement of hydrophobic and charged residues in the domain structure.