PS2 - Problem Set #2 AEP/ENGRD 252 Due in class, Tuesday,...

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Problem Set #2 – AEP/ENGRD 252 Due in class, Tuesday, September 16, 2008 Reading: Course packet 1. Protein Structure a. The primary structure of a protein is given by its sequence of amino acids. Draw a tripeptide consisting of one charged, one non-polar and one polar un-charged amino acid in the form that would predominate at pH 7. Identify which bonds along the backbone are free to rotate and which are not. b. Secondary structure refers to local arrangements of amino acids into stable configurations. Two common forms of secondary structure are the α -helix and the β -pleated sheet. Describe each of these structures in detail (How are the peptide backbones arranged? What are the stabilizing interactions?) c. Tertiary protein structure is the entire 3-D structure of a single polypeptide chain. Domains are parts of a polypeptide that can independently fold into stable structures, often forming functional units such as binding pockets or catalytic sites. Rather than developing new proteins from scratch, nature
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PS2 - Problem Set #2 AEP/ENGRD 252 Due in class, Tuesday,...

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