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Lecture 8 Questions

Lecture 8 Questions - 1 What is the backbone of a...

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1. What is the backbone of a polypeptide and how is it formed? What role(s) do hydrogen bonds, disulfide bonds (disulfide bridges), ionic bonds, hydrophobic interactions and covalent bonds play in the structure of polypeptides and functioning proteins? Many amino acids that are linked between amino and carboxyl bonds compose the backbone. These bonds hold together the Primary, Secondary, Tertiary, and Quaternary levels of a protein. 2. What is meant by “conformation” with regards to a protein? Why is protein conformation important for the biological function of proteins? Protein conformation refers to sequences of polypeptides conforming in specific patterns and shapes to form certain proteins. Protein conformation is important for biological functions because the proteins and their functions are determined by the exact shape of the amino acids that comprise the protein. 3. What is the function of hemoglobin and in what kind of cells is this protein found? Describe the general structure of hemoglobin. What is sickle-cell disease and how is related to protein structure in hemoglobin.
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