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문제 1b
Draw the structure for each of the following amino acids and put an asterisk (*) next to any chiral carbon centers in your structure:
b. lysine
문제 2
Classify each of the amino acids in Problem 10.1 as polar (neutral, acidic, or basic) or nonpolar and as hydrophobic or hydrophilic.
a. alanine
b. lysine
c. tryptophan
d. aspartate
문제 3
Give the three-letter and one-letter abbreviations and identify the functional group in the side chain for each amino acid in Problem 10.1.
a. alanine
b. lysine
c. tryptophan
d. aspartate
문제 4c
Draw the structure for each of the following amino acids and put an asterisk (*) next to any chiral carbon centers in your structure:
c. methionine
문제 5
Classify each amino acid in Problem 10.4 as polar (neutral, acidic, or basic) or nonpolar and as hydrophobic or hydrophilic.
a. leucine
b. glutamate
c. methionine
d. threonine
문제 7c
Draw the structure for the amino acid represented by each of the following abbreviations:
c. Q
문제 7d
Draw the structure for the amino acid represented by each of the following abbreviations:
d. Ile
문제 8c
Draw the structure for the amino acid represented by each of the following abbreviations:
c. Val
문제 8d
Draw the structure for the amino acid represented by each of the following abbreviations:
d. Y
문제 11b
Isoleucine has the zwitterion structure shown. Draw the structure and give the net charge of isoleucine that will predominate at the indicated pH values (pI = 6.0).
b. pH 6.0
문제 12a
Glycine has the zwitterion structure shown. Draw the structure and give the net charge of glycine that will predominate at the indicated pH values (pI = 6.0).
a. pH 1.5
문제 12b
Glycine has the zwitterion structure shown. Draw the structure and give the net charge of glycine that will predominate at the indicated pH values (pI = 6.0).
b. pH 12.0
문제 13a
Write the products for the following condensation or hydrolysis reactions:
a.
문제 14a
Write the products for the following condensation or hydrolysis reactions:
a.
문제 15a
Consider the following tripeptide:
a. Circle the N-terminal amino acid, and give its name. Draw a square around the C-terminal amino acid, and give its name.
문제 16b
Consider the following tripeptide:
b. Give the one-letter and three-letter abbreviations of this tripeptide.
문제 17b
Draw the structural formula for each of the following peptides:
b. KCG
문제 17c
Draw the structural formula for each of the following peptides:
c. His—Met—Gln
문제 18c
Draw the structural formula for each of the following peptides:
c. Val—Arg
문제 18d
Draw the structural formula for each of the following peptides:
d. IYP
문제 20a,b
Identify the N-terminus and the C-terminus for each of the peptides in Problem 10.18.
a. Ala—Asn—Thr
b. DS
문제 20c
Identify the N-terminus and the C-terminus for each of the peptides in Problem 10.18.
c. Val—Arg
문제 20d
Identify the N-terminus and the C-terminus for each of the peptides in Problem 10.18.
d. IYP
문제 22
How many different tripeptides that contain one leucine, one glutamate, and one tryptophan are possible?
문제 23
Name the stabilizing attractive force found in secondary structures of proteins.
문제 24
When a protein folds into its tertiary structure, does the primary structure change? Explain.
문제 25
Describe the differences in the shape of an α helix and a β-pleated sheet.
문제 26b
What type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?
b. alanine and valine
문제 27a
What type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?
a. lysine and glutamate
문제 27b
What type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?
b. leucine and isoleucine
