Problems chapter 4

Problems chapter 4 - labeled I II III and IV Use your...

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Chem 365 Homework problems Chapter 4 1-7. From Voet, Voet, and Pratt, Chapter 4: Problems 2-4, and 6-9. 8. Draw the amino acid L-Tyrosine in its fully protonated form. Show the proper stereochemistry. 9. Sketch a titration curve for the amino acid tyrosine. (Hint: plot pH on the y- axis and equivalents of base on the x-axis) 10. a. What is the single letter code for tyrosine? b. What is the charge on the prevailing species of tyrosine at pH 12? c. Calculate the isoelectric point (pI) of tyrosine. 11. Draw the amino acid L-histidine in its fully protonated form. Show the proper stereochemistry. 12. Sketch a titration curve for the amino acid histidine. 13. a. What is the single letter code for histidine? b. What is the charge on the prevailing species of histidine at pH 7? c. Calculate the isoelectric point (pI) of histidine.
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Chem 365 Homework problems 14. The chemical structures of four amino acids are depicted above and they are
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Unformatted text preview: labeled I, II, III, and IV. Use your knowledge of amino acid nomenclature, structure, and chemistry to answer the following questions. Answer with the Roman numeral unless otherwise instructed. What is the single letter code of amino acid I? Which of these does not carry a neutral charge at pH 7? Which amino acid is classified as aromatic? Which is shown above as a D-amino acid? What is the three letter code of amino acid III? What is the isoelectric point (pI) of I? Which has a chiral center within its side group? Which amino acid contains the indole side group? Which cannot form hydrogen bonds through its side group? Which will elute last from (or bind most tightly to) an anion exchange column? Which has a polar uncharged side group? Between amino acid II and amino acid III, which would you most expect to see buried in the core of a globular protein?...
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Problems chapter 4 - labeled I II III and IV Use your...

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