Question

3. Suppose the polypeptide below (where each circle represents an amino acid residue) was to form a folded structure stabilized primarily by a disulfide linkage. a. Draw the folded structure (using circles) and illustrate the disulfide bond. Asp Met LeuCys Gly GlyY Val IleTyrXSerVal CysPhe b. What level of protein structure is being illustrated in the folded forrm? Primary, secondary, tertiary, or quaternary? c. What other type of intramolecular interaction might stabilize the folded form of this polypeptide? 4. The storage form of insulin is a hexamer that coordinates with a zine ion. a. What level of protein structure is described above? b. The presence of the zine ion would make the storage form of insulin an example of what kind of protein?

Answer 1

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