Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 7, Problem 42SA
Summary Introduction
To review:
The mechanism of action of an antifreeze glycoprotein.
Introduction:
Glycoproteins are compoundswhichcontain carbohydrate and protein linked by N-glycosidic linkage and O- glycosidic linkage. Antifreeze glycoprotein is found in fishes living in the Arctic Ocean where the temperature of water is below the freezing point of the organism.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Fish living in environments such as the Arctic Ocean, wherewater temperatures are below the freezing point of theirblood, are able to survive because of so-called antifreezeglycoproteins. Suggest how these glycoproteins work.
It is important to note that galactose is an important component of glyco-
proteins. What is the effect on glycoprotein synthesis in case of galactosemic
patients who are not given galactose in their diet? Explain this observation.
The “keto diet” is a dietary regimen in which carbohydrates are severely restricted, protein intake is low, and fat comprises 70–90% of daily calories. The diet causes “nutritional ketosis,” which is a different metabolic state than the ketosis that occurs in an untreated diabetic.
The normal ketone body concentration is less than 0.6 mM. Explain why an individual on the keto diet may have a blood ketone body concentration of up to 3 mM.
What biochemical pathways are active in an individual adhering to the keto diet?
What pathways are largely inactive?
Protein intake is kept low because a high-protein diet would inhibit ketosis. Explain why.
Why might the keto diet lead to weight loss?
Chapter 7 Solutions
Biochemistry: The Molecular Basis of Life
Ch. 7 - Prob. 1QCh. 7 - Prob. 2QCh. 7 - Prob. 3QCh. 7 - Prob. 4QCh. 7 - Prob. 5QCh. 7 - Prob. 6QCh. 7 - Prob. 7QCh. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - Prob. 3RQ
Ch. 7 - Prob. 4RQCh. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQCh. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 16RQCh. 7 - Prob. 17RQCh. 7 - Prob. 18RQCh. 7 - Prob. 19RQCh. 7 - Prob. 20RQCh. 7 - Prob. 21RQCh. 7 - Prob. 22RQCh. 7 - Prob. 23RQCh. 7 - Prob. 24RQCh. 7 - Prob. 25RQCh. 7 - Prob. 26RQCh. 7 - Prob. 27RQCh. 7 - Prob. 28FBCh. 7 - Prob. 29FBCh. 7 - Prob. 30FBCh. 7 - Prob. 31FBCh. 7 - Prob. 32FBCh. 7 - Prob. 33FBCh. 7 - Prob. 34FBCh. 7 - Prob. 35FBCh. 7 - Prob. 36FBCh. 7 - Prob. 37FBCh. 7 - Prob. 38SACh. 7 - Prob. 39SACh. 7 - Prob. 40SACh. 7 - Prob. 41SACh. 7 - Prob. 42SACh. 7 - Prob. 43TQCh. 7 - Prob. 44TQCh. 7 - Prob. 45TQCh. 7 - Prob. 46TQCh. 7 - Prob. 47TQCh. 7 - Prob. 48TQCh. 7 - Prob. 49TQCh. 7 - Prob. 50TQCh. 7 - Prob. 51TQCh. 7 - Prob. 52TQCh. 7 - Prob. 53TQCh. 7 - Prob. 54TQCh. 7 - Prob. 55TQCh. 7 - Prob. 56TQCh. 7 - Prob. 57TQCh. 7 - Prob. 58TQCh. 7 - Prob. 59TQCh. 7 - Prob. 60TQCh. 7 - Prob. 61TQCh. 7 - Prob. 62TQCh. 7 - Prob. 63TQCh. 7 - Prob. 64TQCh. 7 - Prob. 65TQCh. 7 - Prob. 66TQCh. 7 - Prob. 67TQCh. 7 - Prob. 68TQCh. 7 - Prob. 69TQCh. 7 - Prob. 70TQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biochemistry and related others by exploring similar questions and additional content below.Similar questions
- Why "cellulose is composed of a long, branced chain of B-glucose subunits" is false?arrow_forwardSuggest a reason why amino acids are usually more soluble at pH extremes than they are at neutral pH. (Note: This does not mean that they are insoluble at neutral pH).arrow_forwardHomocystinuria is caused by a defect in cystathionine beta-synthase (or 13-synthase), which leads to an accumulation of homocysteine in the blood. This accumulation causes symptoms such as a tall, thin frame, flushed cheeks, and osteoporosis (thinning of the bones). These individuals should limit their intake of proteins that contain methionine, such as egg whites. Using your understanding of biochemistry, explain why people with Homocystinuria should not consume egg whites and other such proteins.arrow_forward
- If phenylalanine was not an essential amino acid, would diet therapy (the elimination of phenylalanine from the diet) for PKU work? Do not just say yes or no. Give a short explanation for this hypothetical situation.arrow_forwardA mature glycogen particle extends out from the homodimer, glycogenin, typically having 12 tiers of chains with two chains per tier and 13 residues per chain. How many glucose residues are in such a particle?arrow_forwardSketch a titration curve for the amino acid cysteine, and indicate the pKavalues for all titratable groups. Also, indicate the pH at which this amino acid has no net charge.arrow_forward
- Most animals cannot use wool for nourishment. An exception is the clothes moth: it can derive nourishment from eating clothing made of natural fibers such as wool (which is rich in a-keratin). The digestive tract of the larvae of clothes moths provides a highly reducing environment. Why is this beneficial to the larvae? The reducing environment will reduce the disulfide linkages, making it easier to digest the proteins. The reducing environment will hydrolyze the peptide bonds. The reducing environment will interfere with the H-bonding between the tropocollagen molecules, making the type of protein found in most natural fibres easier to digest. The reducing environment will help to kill bacterial pathogens. The reducing environment will detoxify the carcinogenic dyes used in the textile industry.arrow_forwardThe human body uses the branched polymer glycogen for short term storage of glucose in the liver. It is broken down by the stepwise removal of the terminal glucose monomer. Explain why it is an advantage for glycogen to have a branch chain structure rather than a linear structure. (A pargraph would be great)arrow_forwardGlobular proteins with multiple disulfide bonds must be heated longer and at higher temperature to denature them. Bovinepancreatic trypsin inhibitor (BPTI), having 58 amino acids in a single chain and 3 disulfide linkages, loses its catalytic activity whenheated at nearly 90°C for 5-10 minutes. Explain the molecular basis of this observed thermal property of BPTI relative to the nativestructure and function of the protein.arrow_forward
- Some of the following four amino acids : alanine, arginine, histidine, aspartic acid would provide a side chain for acid-base catalysis at physiological pH (assume pK of each amino acid is equal to pK value for the free amino acid in solution). Explain for each amino acid how and why each would or would not provide the side chain residue to support acid-base catalysis at physiological pH.arrow_forwardProteins are often regulated by phosphorylation/dephosphorylation reactions. What amino acid residues can be phosphorylated?arrow_forwardGlobular proteins with multiple disulfide bonds must be heated longer and at higher temperature to denature them. Bovinepancreatic trypsin inhibitor (BPTI), having 58 amino acids in a single chain and 3 disulfide linkages, loses its catalytic activity whenheated at nearly 90°C for 5-10 minutes. Explain the molecular basis of this observed thermal property of BPTI relative to the nativestructure and function of the protein. please do not copy from other answers herearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Metabolic Pathways; Author: Wisc-Online;https://www.youtube.com/watch?v=m61bQYio9ys;License: Standard Youtube License