Biochemistry
8th Edition
ISBN: 9781464126109
Author: Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr., Lubert Stryer
Publisher: W. H. Freeman
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Question
Chapter 2, Problem 5P
Interpretation Introduction
Interpretation:
The following amino acids have R groups that have hydrogen-bonding potentials needs to be identified.
Ala, Gly, Ser, Phe, Glu, Tyr, Met, and Thr
Concept introduction:
Amino acids are organic compounds containing amino as well as
Here, R group is different for different amino acids. This group can be acidic, basic or neutral.
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the resonance stabilization of the amide linkage has profound
effects on protein structure. Which of the following are the direct effect(s) of this on
protein structure?
Select all that apply
All six atoms around the bond (including the Co) lie on the same plane
There is no free rotation about the peptide bond.
The bond between the carbon and the nitrogen in the peptide bond keeps
"flickering" between being a single bond and a double bond.
The peptide bond is polar.
The nitrogen in the peptide bond cannot accept a hydrogen bond.
Which of the following amino acids have R groups that have hydrogen- bonding potential? Ala, Gly, Ser, Phe, Glu, Tyr, Ile, and Thr
Shown below is the structure of a polypeptide with the pK, values of its acidic hydrogens.
pK =
= 10.1
H
OH pK, = 9.2
H.
pKa = 2.1 H.
N-H pK, = 6.0
pKa = 3.9
1. How many peptide bonds are present in one molecule of the polypeptide?
[ Select ]
II. Over what pH range would this molecule predominantly exist in a state that has a net charge of zero?
[ Select ]
ZI
Chapter 2 Solutions
Biochemistry
Ch. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10P
Ch. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34P
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- Chemistry Draw the stable form of the peptide Ser-Trp-Glu-Asp-Cys-Asn at pH 10.40. Be sure to explicitly label every N, O, S as well as H that is not attached to carbon in the main chain and indicate a rectangle to identify the six atoms that are coplanar with the peptide bond between residue 2 and 3 in the peptidearrow_forwardNeed help The β chains of HbA and HbS were treated with trypsin, and the sequence of the N-terminal tryptic peptides are as given below. Do these peptides separate from each other in an electric field if the pH is 7.0? Explain in detail the reasoning behind your answer and include your calculations for the charge of each peptide in your answer. HbA: Val-His-Leu-Thr-Pro-Glu-Glu-Lys HbS: Val-His-Leu-Thrarrow_forwardA peptide bond... is a version of an ester bond is a version of an amide bond is the basis of protein secondary structure is formed by addition of waterarrow_forward
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