BIOCHEMISTRY BOOKS ALC&MOD MST/ET PKG
1st Edition
ISBN: 9780134172507
Author: APPLING
Publisher: Pearson Education
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Chapter 6, Problem 12P
The peptide hormone vasopressin is used in the regulation of saltwater balance in many vertebrates. Porcine (pig) vasopressin has the sequence
Asp-Tyr-Phe-Glu-Asn-Cys-Pro-Lys-Gly
a. Using the data in Figure 5.6 and Table 5.1, estimate the extinction coefficient e (in units of cm2/mg) for vasopressin, using radiation with λ = 280 nm.
b A solution of vasopressin is placed in a 0.5-cm-thick cuvette. Its absorbance at 280 nm is found to be 1.3. What is the concentration of vasopressin, in mg/cm3? (See Tools of Biochemistry 6A).
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Solution
? Hint
Sub
bo Each pictured Lewis structure is invalid. Identify the error in each case.
O Macmillan Learning
:0▬▬0:
Answer Bank
wrong electron total
:0-
:F======F:
octet-rule violation
N
:0:
[s] mM
V (M/s)
Uninhibited
0.333
1.65 x 107
1.05 x 107
V (M/s) x 10'
Inhibitor A
V (M/s) x 107
Inhibitor B
0.794 x 107
0.40
1.86 x 107
1.21 x 107
0.893 x 107
0.50
2.13 x 107
1.43 x 107
1.02 x 107
0.666
2.49 x 107
1.74 x 107
1.19 x 107
1.0
2.99 x 107
2.22 x 107
1.43 x 107
2.0
3.72 x 107
3.08 x 107
1.79 x 107
For a Michaelis-Menten reaction, k₁-5 x 10'/M-s, k.-2 x 10%/s, and k₂-4 x 10²/s.
a)
Calculate the Ks and KM for this reaction.
b)
Does substrate binding achieve equilibrium or steady state?
Chapter 6 Solutions
BIOCHEMISTRY BOOKS ALC&MOD MST/ET PKG
Ch. 6 - Prob. 1PCh. 6 - Bovine pancreatic trypsin inhibitor (BPTI; Figure...Ch. 6 - A schematic structure of the subunit of...Ch. 6 - In the protein adenylate kinase, the C-terminal...Ch. 6 - Give two reasons to explain why a proline residue...Ch. 6 - Consider a small protein containing 101 amino acid...Ch. 6 - a. Based on a more conservative answer to Problem...Ch. 6 - The following sequence is part of a globular...Ch. 6 - a. A protein is found to be a tetramer of...Ch. 6 - Under physiological conditions, the protein...
Ch. 6 - Theoretical and experimental measurements show...Ch. 6 - The peptide hormone vasopressin is used in the...Ch. 6 - A protein gives under conditions of buffer...Ch. 6 - A protein gives a single band on SDS get...Ch. 6 - It has been postulated that the normal...Ch. 6 - Prob. 16PCh. 6 - Do you expect a Pro Gly mutation in a...Ch. 6 - Rank the following in terms of predicted rates...
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