Macmillan Learning COO™ -OOC-CH-CH₂-CH-COO *NH, 3 addition of a hydroxyl group ✓addition of a carboxyl group modification of the a-amino group removal of a side chain amino group removal of a -CH group standard amino acid: Glutamic Acid Identify the modification that yields the second amino acid depicted. addition of a carboxyl group

Macmillan Learning COO™ -OOC-CH-CH₂-CH-COO *NH, 3 addition of a hydroxyl group ✓addition of a carboxyl group modification of the a-amino group removal of a side chain amino group removal of a -CH group standard amino acid: Glutamic Acid Identify the modification that yields the second amino acid depicted. addition of a carboxyl group

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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2. Draw the peptide product formed from the reaction of the following amino acids. но но | || | || H₂N-C-C-OH + H₂N-C-C-OH I H HOH H 3. What is the product if the following peptide is hydrolyzed? H₂N, O - OH
M 10
Complete the table for the ionizable groups of the fictitious amino acid hypothetinine. pka (to TWO decimals) Average charge of group when pH=pK (to ONE decimal) Group Ka alpha-carboxyl 1.38 x 103 alpha-amino 6.02 x 10-10
GT 2 A. Draw the structure of L-valine in a strongly basic B. What is the charge of this amino solution. acid in a strongly basic solution? В. A. What is the pH of D at its isoelectric point? Show the structure of this amino acid at its isoelectric point. C. What is the charge of this amino acid in a strongly acidic solution?
Show how to convert the side-chain carboxyl group to a benzyl ester using benzyl chloride as a source of the benzyl group.
4. canonical L-amino acids - list them in the boxes
Q2
Don't copy Write the chemical reaction of amino acid when it can acts as amphoteric molecule.
10. Use the information in the table below to draw the structure of the predominant form of each amino acid at physiological pH (pH = 7.4) R side chain pKa (a-COOH) -CH₂CH(CH3)2 -(CH2)4NH2 -(CH2)2CO2H Amino acid Leucine Lysine Glutamic acid L-leucine L-lysine L-glutamic acid 2.36 2.18 2.19 pKa (α-NH3*) pKa (side chain) 9.60 8.95 9.67 10.79 4.25
How do you deprotect the side-chain carboxyl under mild conditions without removing the BOC-protecting group at the same time?
H₂N Combination of two or more protein units 7. Which type of cross-link involves interactions between two cysteine amino acids? 8. Which type of cross-link would form between the following amino acids? Η Ο || H₂N-C-C-OH T CH₂ C=O NH₂ Η Ο LL H₂N-C-C-OH T CH₂ OH 9. To what main enzyme class do the nzym that catalyze the following reaction belong? (oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases) HO | || I c-c-N-C-COO + H₂O IT HR₂ R₁ H 1 This bond is cleaved H H₂N-C-COOⓇ I R₂ Wilter navy q H I H₂N-C-C00 1 R₁ •Qisulfide 10. Briefly explain the Lock and Key enzyme model.
label the amino acid