Ps4q - MCB 100 Fall 2003 Problem Set 04 September 4 Q1 Identify the two amino acids shown below(a Which one is a standard amino acid and which one

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MCB 100 Fall, 2003 Problem Set 04, September 4 Q1. Identify the two amino acids shown below. (a) Which one is a standard amino acid, and which one is not? (b) What is the fundamental difference between standard amino acids and non-standard amino acids? How many standard amino acids are there? Q2. Classify the following amino acids as (i) non-polar (ii) polar, uncharged (iii) polar charged or (iv) aromatic: I, K, R, Y, Q, L, W Q3. Which of the following factors is the single most important contribution to the stability of a protein’s folded conformation: A) sum of free energies of formation of many weak interactions among the hundreds of amino acid residues in a protein B) sum of free energies of formation of many weak interactions between a protein’s polar amino acids and surrounding water C) adoption of f and y backbone torsion angles that are consistent with the Ramachandran diagram D) favorable free energy resulting from removal of nonpolar groups from water E) stabilizing effect of hydrogen bonds in a protein between the carbonyl group of one peptide bond and the amino group of another, as indicated by: -C=O|||H-N-
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This test prep was uploaded on 04/12/2008 for the course MCB 100 taught by Professor Berger during the Fall '04 term at University of California, Berkeley.

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Ps4q - MCB 100 Fall 2003 Problem Set 04 September 4 Q1 Identify the two amino acids shown below(a Which one is a standard amino acid and which one

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