1234 Match one of the following protein classes (A.- G.) with each of the proteins below (1-8). These protein classes may be used more than once. Most likely you will need to search online to find what these proteins do. On the test, the function will be described. A. Structural B. Contractile C. Storage D. Transport 3. Hemoglobin Amylase Ferritin Somatotropin E. Hormone F. Catalytic G.Protection 5698 5. Titin 6. Immunoglobulin 7. 8. Ligase Lipoprotein Identify the following descriptions of protein structure as primary (1"), secondary (2), tertiary (3"),or quaternary (4*): 1. 2. 3. 4. 5. 6. 7. 8. 68 9. Hydrogen bonding between C=O and N-H of two peptide bonds. Amino acid sequence linked by peptide bonds. A disulfide bond joining distant parts of a single peptide. The combination of four protein subunits. Hydrogen bonding to form an alpha (a)-helix Hydrophilic side groups seeking contact with water on a peptide chain. Hydrogen bonding to form a pleated-sheet structure. A salt bridge forms between two oppositely charged side chains on two protein subunits. Hydrophobic side groups forming a nonpolar center within a peptide.