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2. Draw the Fisher projection for the following amino acids: a. L-Threonine b. L-Phenylalanine C. L-Serine d. L-Asparagine 3. Histidine possesses a basic side chain which is protonated at physiological pH, Identify which nitrogen atom in the side chain is protonated (Show the structure of Histidine).

2. Draw the Fisher projection for the following amino acids: a. L-Threonine b. L-Phenylalanine C. L-Serine d. L-Asparagine 3. Histidine possesses a basic side chain which is protonated at physiological pH, Identify which nitrogen atom in the side chain is protonated (Show the structure of Histidine).

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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I need help on 2 and 3 please

1. Draw the bond-line structure showing the zwitterionic form of each of the following amino acids: a. L-Valine b. L-Glutamine C. L-Tryptophan d. L-Proline 2. Draw the Fisher projection for the following amino acids: a. L-Threonine b. L-Phenylalanine C. L-Serine d. L-Asparagine 3. Histidine possesses a basic side chain which is protonated at physiological pH, Identify which nitrogen atom in the side chain is protonated (Show the structure of Histidine). 4. Draw the bond-line structure of the peptide that corresponds with the following sequence of amino acid residues and identify the N terminus and C terminus: Tre-Val-Ser-Met-Gly-Glu 5. Show all the steps necessary to make the dipeptide Phe-Ala from L-phenylalanine and Lalanine. 6. Predict the major product of the reaction between L-valine and: а. МеОН, Н* b. Di-tert-butyl-dicarbovate. с. NaOH, H20 d. HCl 7. Draw the structure of the protected amino acid that must be anchored to the solid support in order to use a Merrifield synthesis to prepare leucine encephalin. (N terminus) _Try-Glv-Glv-Phe-Leu (С Тегminus)
Transcribed Image Text:1. Draw the bond-line structure showing the zwitterionic form of each of the following amino acids: a. L-Valine b. L-Glutamine C. L-Tryptophan d. L-Proline 2. Draw the Fisher projection for the following amino acids: a. L-Threonine b. L-Phenylalanine C. L-Serine d. L-Asparagine 3. Histidine possesses a basic side chain which is protonated at physiological pH, Identify which nitrogen atom in the side chain is protonated (Show the structure of Histidine). 4. Draw the bond-line structure of the peptide that corresponds with the following sequence of amino acid residues and identify the N terminus and C terminus: Tre-Val-Ser-Met-Gly-Glu 5. Show all the steps necessary to make the dipeptide Phe-Ala from L-phenylalanine and Lalanine. 6. Predict the major product of the reaction between L-valine and: а. МеОН, Н* b. Di-tert-butyl-dicarbovate. с. NaOH, H20 d. HCl 7. Draw the structure of the protected amino acid that must be anchored to the solid support in order to use a Merrifield synthesis to prepare leucine encephalin. (N terminus) _Try-Glv-Glv-Phe-Leu (С Тегminus)
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