2. Determine the branch points and reducing ends of amylopectin. A 0.5g sample of amylopectin was analyzed to determine the fraction of the total glucose residues that are branch points in the structure. The sample was methylated and then digested, yielding 50 umol Of 2,3-dimethylglucose and 0.4 umol of 1,2,3,6-tetramethyl glucose. (MW lucose = 162 g/mol, minus H,0) %3D a. What fraction of the total residues are branch points? b. How many reducing ends does the amylopectin have?

2. Determine the branch points and reducing ends of amylopectin. A 0.5g sample of amylopectin was analyzed to determine the fraction of the total glucose residues that are branch points in the structure. The sample was methylated and then digested, yielding 50 umol Of 2,3-dimethylglucose and 0.4 umol of 1,2,3,6-tetramethyl glucose. (MW lucose = 162 g/mol, minus H,0) %3D a. What fraction of the total residues are branch points? b. How many reducing ends does the amylopectin have?

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter20: Carbohydrates

Section: Chapter Questions

Problem 20.83P

See similar textbooks

Related questions

Q: 1. The following equation below shows the production of glucose and galactose from lactose. OH CH₂OH…

A: Carbohydrates are the naturally occurring organic compound of carbon,hydrogen and oxygen which are…

Q: Q3: Distinguish by the mention of one detector between the compounds with giving the cause and the…

A: A detector could be any substance or device which is used to differentiate the two things by showing…

Q: The glycosidic bond in a disaccharide links the two monosaccharides. This bond forms by loss of the…

Q: 2. Draw the structure of the disaccharide a -glycosyl(1-6)-galactose in the B anomeric form and…

Q: 12. Which of the following glycosidic linkages does the sugar shown below contain? CH2OH CH2OH O. OH…

Q: (d) Use the diagram below to complete the cyclic alpha form of structure V (e) Circle the…

A: When acyclic carbohydrate undergoes cyclisation to form cyclic carbohydrate. If H remains at the…

Q: Identify the isotopes that would be found in each metabolite when [2-14C,15N]glutamate undergoes…

A: Gg

Q: Answer the following questions using the Haworth structure drawn below. Но CH2 OH OH ОН a. Identify…

A: This structure is a representation of α-D-glucopyranose.

Q: From the choices given below select the L-aldopentose that yields an optically inactive alditol upon…

A: Given are aldopentose sugars.Aldopentose sugar on reduction with sodium borohydride forms…

Q: A solution contains serine and alanine. What are the possible dipeptide products that can form from…

A: Dipeptide is formed when N terminal of one amic react with C terminal of another amino acid thus…

Q: Q3: Use arrows to match the terms (A) column with (B) column. Some may be used more than once and…

A: Biomolecules such as proteins, cholesterol, lactose, waxes, Angiotensin II are produced by cells and…

Q: Draw the Haworth projection of the disaccharide made by joining two D-glucose molecules with a…

A: Haworth projection

Q: Describe the carbohydrate structure depicted below; CH2OH -CH2 | О он OH Но Он H OH H OH your answer…

A: Carbohydrates are one of main nutrients which is found in food and drinks.

Q: When talking about the compound Gal(Beta 1-4) Glc, What carbon involved in glycoside bond? What…

A: Anomeric carbon: The chiral carbon center of a cyclic sugar bearing a hemiacetal or acetal is called…

Q: ACTIVITY-7. Refer to the structure below. Redraw the structures, identify the monosaccharide and…

Q: A disaccharide is shown below. For part (a), circle the anomeric carbon atoms. For part (b), explain…

A: The structure of the given molecule is: Identify the anomeric carbon. Is it a reducing sugar or a…

Q: groups) and determined both the sequence of the peptide and the sequence of the sugar molecule. The…

A: Haworth structure of beta-D- glucopyranosyl (1-4) beta -D-galactopyranose.

Q: 1) The starch in 25kg (~1 bushel) of corn is hydrolyzed and in the process 1.8kg of water (H2O) is…

A: Step 1:Step 2: Step 3: Step 4:

Q: 4. An iterative approach to oligosaccharide synthesis involves the use of protected glycals (sugars…

A: Given is steps of oligosaccharide synthesis. Oligosaccharide synthesis involves the use of protected…

Q: For the disaccharide shown below, use an arrow to identify the glycosidic bond and classify it as…

A: Given: structure

Q: Give the major product that is formed when the primary hydroxyl group of the following…

A: We have to predict the major product.

Question

2. Determine the branch points and reducing ends of amylopectin.
A 0.5g sample of amylopectin was analyzed to determine the fraction of the
total glucose residues that are branch points in the structure. The sample was
methylated and then digested, yielding 50 umol of 2,3-dimethylglucose and 0.4 µmol
of 1,2,3,6-tetramethyl glucose. (MWglucose = 162 g/mol, minus H,0)
%3D
a. What fraction of the total residues are branch points?
b. How many reducing ends does the amylopectin have?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Determine the branch points and reducing ends of amylopectin. A 0.5g sample of amylopectin was analyzed to determine the fraction of the total glucose residues that are branch points in the structure. The sample was methylated and then digested, yielding 50 μmol of 2,3-methylglucose and 0.4 μmol of 1,2,3,6-tetramethyl glucose. (MWglucose = 162 g/mol, minus H2O) What fraction of the total residues are branch points? How many reducing ends does the amylopectin have?
A biochemist completely digests a glycerophospholipid with a mixture of phospholipases A and D. HPLC and mass spectrometry analysis reveals the presence of an amino acid of 105,09 Da, a saturated fatty acid of 256.43 Da, and an omega-3 monounsaturated fatty acid of 282.45 Da. Which amino acid does the glycerophospholipid contain? O valine (C,H, NO,) O alanine (C, H,NO,) O scrine (C,H,NO,) O proline (C,H,NO,) Modify the phosphoglycerol backbone to draw the most likely structure of the lipid. Add the amino acid using the groups tool. Draw Rings Groups More Erase Select
OF as fil PDF What are the products of the reaction of the triacylglycerol found in coconut oil (containing only lauric acid) with KOH? O UNOFFIC TRANSCR 9°F Mostly cloudy CH,−O–C−(CH2)10—CH3 0 CH-0-C-(CH₂)10-CH3 + 3KOH O CH,−O−C(CH2)10—CH3 Glyceryl trilaurate O one glycerol molecule and three potassium laurate formula units O one glycerol molecule and three sodium laurate formula units O one glycerol molecule and three lauric acid molecules O one glycerol molecule and three potassium myristate formula units A Heat, 10 O Search ac PD PD maste omiss pe huniz recor C
Using the generated linear equation: y = 0.7802457x - 0.0127078, calculate the concentration of free D-glucose (in mM) for each of the diluted hydrolyzed glycogen test solution. Diluted Hydrolyzed Glycogen Test Solution No. Absorbance (at 510 nm) 1 (blank) 0.0000 2 0.1211 3 0.2813 4 0.4615 5 0.6134 6 0.7901 7 0.9189
Treatment of a 258 mg sample of amylopectin by the methylation and hydrolysis procedure described yielded 12.4 mg of 2,3‑di‑O‑methylglucose. Determine what percentage of the glucose residues in amylopectin contained an (α1→6) branch. (Assume that the average molecular weight of a glucose residue in amylopectin is 162 g/mol and the molecular weight of 2,3‑di‑O‑methylglucose is 208 g/mol.) ( α1→6) branched glucose residues: %
Ff.231.
25-15 Give the general classification of each compound. (a) glyceryl tripalmitate (b) CH3–(CH2)10—CH, 0 S-O- Na+ O sodium lauryl sulfate (in shampoo) CH₂ (d) CH3 (e) H₂C caryophyllene (from cloves) H₂C O (c) CH3–(CH2)3–0–C−(CH2)16–CH3 tetradecyl octadecanoate COOH (f) H H OH PGA₂ H₂C H OH LC=CH H H norethindrone (a synthetic hormone)
Q3: Distinguish by the mention of one detector between the compounds with giving the cause and the detection result: 1-Glucose and Glyceride 2-Fructose and Sucrose
NOT a graded assignment. From my understanding it is just (Delta G) = (Delta H) - (T)(Delta S) for part A. I am confused about the "unfolding" part and the last part.
8. The following proteins represent a wide range of molecular weights and isoelectric points. Mr is the molecular weight of a single protein chain. • Protein 1: Mr 68,544; pl 6.11 (monomer) • Protein 2: Mr 29,041; pl 5.32 (dimer) • Protein 3: Mr 15,805; pl 5.7 (dimer) • Protein 4: Mr 12,165; pl 4.74 a. Which protein is the most acidic? Explain your answer. b. Which protein will migrate the slowest in an SDS-PAGE? Explain your answer. c. In what order will these proteins elute from a cation exchanger at pH 8? Explain your answer. d. In what order will these proteins salt out from a pH 7 solution by the dropwise addition of saturated ammonium sulfate? Explain your answer. 5 83°F Cloudy
2:11 A O l 85% casein micelles are stabilized internally by: Hydrophobic interactions, calcium phosphate bridges, and K-casein. Hydrophobic interactions and calcium phosphate bridges. Hydrophobic interactions and K-casein. Calcium phosphate bridges, and K-casein. At cold temperature, Somatic cells and bacteria are not able to produce lipase and protease that affect the quality of cheese. False True Apart from quantitative levels, fat fractions and their ratios play a significant role in gel formation and strength of yogurt. * True False II
Researchers analysed a glycopeptide (a peptide carrying one or several oligosaccharide groups) and determined both the sequence of the peptide and the sequence of the sugar molecule. The latter was identified as a diholoside coupled to the peptide by an osidic bond. The systematic name of this sugar is: B-D-glucopyranosyl-(1→4)-ß-D-galactopyranose. : Represent the chemical formula of this diholoside in a way that all oses are Question 1 represented according to the Haworth convention. Apart from the furane and/or pyrane cycles all atoms of this molecule must be given.