Concept explainers
(a)
Interpretation:
The reason the proteins are not visible in the lanes without amylase treatment should be discussed.
Concept introduction:
Alpha-amylase catalyzes the hydrolysis of alpha linkages in polysaccharides and release glucose and maltose. Glycogenin is an enzyme which catalyzes the formation of short glycogen primers from glucose molecules.
SDS-PAGE is a biochemical technique used to separate charge molecules in a mixture, according to their molecular masses. SDS acts as a surfactant and gives negative charge to the proteins. Thus it allows the protein separation only based on their molecular mass. Western blot is a visualizing technique which is commonly used to analyze proteins in a given sample via SDS-PAGE.
(b)
Interpretation:
The effect of treating the sample with a-amylase should be explained.
Concept introduction:
Alpha-amylase catalyzes the hydrolysis of alpha linkages in polysaccharides and release glucose and maltose. Glycogenin is an enzyme which catalyzes the formation of short glycogen primers from glucose molecules.
SDS-PAGE is a biochemical technique used to separate charge molecules in a mixture, according to their molecular masses. SDS acts as a surfactant and gives negative charge to the proteins. Thus it allows the protein separation only based on their molecular mass. Western blot is a visualizing technique which is commonly used to analyze proteins in a given sample via SDS-PAGE.
(c)
Interpretation:
The list of other glycogen associated proteins and the reasons for their absence in SDS-PAGE should be discussed.
Concept introduction:
Alpha-amylase catalyzes the hydrolysis of alpha linkages in polysaccharides and release glucose and maltose. Glycogenin is an enzyme which catalyzes the formation of short glycogen primers from glucose molecules.
SDS-PAGE is a biochemical technique used to separate charge molecules in a mixture, according to their molecular masses. SDS acts as a surfactant and gives negative charge to the proteins. Thus it allows the protein separation only based on their molecular mass. Western blot is a visualizing technique which is commonly used to analyze proteins in a given sample via SDS-PAGE.

Want to see the full answer?
Check out a sample textbook solution
Chapter 21 Solutions
BIOCHEMISTRY
- 1. Which one is the major organic product obtained from the following aldol condensation? O NaOH, H₂O heat A B C D Earrow_forwardAn organic chemist ordered the wrong item. She wanted to obtain 1-hydroxy-2-butanone, butinstead ordered 2-hydroxybutyraldehyde. As a good biochemist, show how the organic chemistcould use biological catalysis to make her desired compound. Please show the mechanism by drawing.arrow_forwardShow the fate of the hydrogen on carbon-2 of glucose. Please draw out the structure using curve arrows to show electron flow.arrow_forward
- 3. Which one of the compounds below is the major product formed by the reaction sequence shown here? CH3 + CH3NO2 NaOH H2, Ni ? nitromethane acetophenone OH OH HO HN- u x x x x Ph A HO -NH2 HO H Ph Ph Ph N- H B Ph NH2 D Earrow_forward4. Only ONE of the five compounds below can be prepared by an aldol condensation in which a single carbonyl compound is treated with base. Which one is it? To solve this problem, reverse the aldol condensation that formed each of these molecules to find out what two molecules came together to make the products. The one in which the two molecules are identical is the answer. Ph Ph ཚིག གནས ག ནཱ ཀ ན ཀནཱ A Ph H B Ph Ph H D Ph. Ph Ph E Harrow_forward5. Which one is the major organic product obtained from the following reaction sequence? First, equimolar amounts of cyclopentanone and LDA are mixed at -78°C. Then propionaldehyde (propanal) is added. Addition of aqueous acid completes the process. LDA, -78°C. 1. 2. H₂O* H A B H 0 D H H Earrow_forward
- 2. Which one is the major organic product obtained from the following reaction? NaOH, H₂O heat A B C D Earrow_forwardCH3CH2CHO + propanal PhCH2CHO 2-phenylacetaldehyde mixture of four products NaOH 10. In the crossed aldol reaction of propanal and 2-phenylacetaldehyde shown above, a mixture of four products will be formed. Which ONE of the compounds below will NOT be formed in this crossed aldol reaction? OH Ph A H OH OH Ph H B OH OH H H H Ph Ph C Ph D Earrow_forwardAn organic chemist ordered the wrong item. She wanted to obtain 1-hydroxy-2-butanone, butinstead ordered 2-hydroxybutyraldehyde. As a good biochemist, show how the organic chemistcould use biological catalysis to make her desired compound.arrow_forward
- Predict the products of aldolase catalyzing the reaction with acetone and (S)-3-hydroxybutyraldehyde.arrow_forwardA cancer patient undergoing chemotherapy is taking a protein kinase inhibitor drug. The patientis an avid marathon runner and does not want to miss his upcoming race. Is it a good idea forthis patient to attempt a marathon while on this medication? Explain why or why not.arrow_forwardShow the fate of the hydrogen on carbon-2 of glucose.arrow_forward
- BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage LearningAnatomy & PhysiologyBiologyISBN:9781938168130Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark WomblePublisher:OpenStax College
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningBiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning




