bcmb8190_problemSet3-answers

bcmb8190_problemSet3-answers - helix would be about 5 ppm...

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BCMB/CHEM 8190 ANSWERS TO PROBLEM SET 3 1)
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2) Assuming adenine H2s have the six-membered ring of other adenines 3A above and below, each would shift the H2 upfield by 0.75 ppm. (one can find this number on the plots from Bothner-By’s article, or by using the (1-3cos 2 θ )/r 3 dependent formula given in the class notes) Hence, a flipped out base would have an H2 resonance downfield by 1.5 ppm. 3) According to Spera and Bax the alpha carbon resonance of an amino acid in an alpha
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Unformatted text preview: helix would be about 5 ppm downfield of its corresponding position in a beta sheet. 4) We worked out some of the energies for levels of a pair of weakly coupled spin 1/2 nuclei and sketched the energy level diagram in class. Below is a sketch of the predicted spectrum with lines labeled as to transition and energy difference for the one quantum transitions....
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This note was uploaded on 11/07/2011 for the course CHEM 8853R taught by Professor Gelbaum during the Fall '11 term at Georgia Tech.

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bcmb8190_problemSet3-answers - helix would be about 5 ppm...

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