Fill in .....(1) the complete systematic names for sugars A, B and C (remember to you pyranosyl or furanosylbecause these are not the terminal sugar).(2) The appropriate descriptor of the glycosidic bonds where appropriate/necessary.(3) Draw the missing sugars as indicated onto the given diagram.HOOHGEDAHOOHa-L-psicofuranose(1➜6)-(1➜4)-a-D-idopyranoseHOOHBOHOHOHOHSUGAR ASUGAR BSUGAR C

Furanoses are 5 membered rings consisting of 4 carbon and 1 oxygen atom. Pyranoses are 6 membered…

Answered: (1) the complete systematic names for…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Draw the structure of: The polysaccharide in (b) is dextran, a component of dental plaque. Here b: (b) a polysaccharide formed by joining D-glucose units in 1→6-α-glycosidic linkages
1. Cysteine is an important amino acid that stabilizes the structure of peptides and proteins by the formation of disulfide bond with another cysteine residue. Illustrate the titrimetric profile of cysteine and calculate its isoelectric pH. [Hint: The sulfhydryl group is titratable] 2. The tripeptide Glu-Pro-Arg (EPR) which is a product of Lactobacillus casei fermentation of milk was found to have potent blood pressure lowering properties. Draw the structure of the tripeptide, give its systematic name, show its titration profile, and determine its isoelectric pH.
1. (a) Draw a three-dimensional line structure of (4S,5Z)-4-amino-5,6-difluorohept-5-enal. Place the aldehyde group on the right-hand side of your drawing. (b) Give the Cahn-Ingold-Prelog priority order of the four groups (-C3H3F2. -NH2, -H, -C3H50) at the C4 stereocentre (Highest 1> 2> 3>4 Lowest). 2. Study the curved arrows in the reactions below and provide structures of all the products that form for the given mechanistic step in the following reactions. (a) +0-H (b) H.
VII. Draw the structure of melezitose (either in Haworth or in conformer): a-D-glucopyranosyl- (1–3)-B-D-fructofuranosyl-(2–→1)-a-D-glucopyranoside Is it a reducing sugar?
1) Please list all glycosidic linkages between each monosaccharide units. For example, α(1→4)2) Please discuss whether these oligo/polysaccharides would be reducing or non-reducing sugar. Remember to state your reasoning in complete sentence.
Consider the ff dissacharides.a. Classify the glycosidic linkage as α or β and use numbers to designate its location (e.g. β1→3) b. What monosaccharides are formed when each of the disaccharides is hydrolyzed? c. Draw the chair conformation of each monosaccharide, where applicable.
Which of the structures below is that of о-в-D-glucopyranosyl-(1->4)- a-D-glucoругanose CH2OH CH2OH H. OH он H Он OH OH CH2OH HOH2Ć OH он CH2OH CH2OH OH H он H он он CH2OH CH2 OH H OH он OH None of the other structures are correct.
d) Consider the following disaccharide C. i. ii. iii. iv. OH HO OH OH HO Disaccharide C OH OH OH Give the IUPAC name for disaccharide C. What is the type of glycosidic linkage. Is disaccharide C a reducing sugar? Does it mutarotate? Explain your answer. What products are formed when disaccharide C is hydrolysed with H3O+.
b. Identify (name) each of the following two monosaccharides A and B. НО ОН ОН По A ОН -ОН но- Но Но ОН в ОН c. The disaccharide lactose is built up by one D-galacto-and one D-gluco monosaccharide unit. Draw L-galactose in the Fischer projection (open) form and in its most stable pyranose ring conformation form and determine if the latter is a ¹C4 or a 4C₁ conformation.
Raffinose is a trisaccharide and a minor constituent in sugar beets. (a) Is raffinose a reducing sugar?Explain. (b) What are the monosaccharides that compose raffinose ? (c) β - Galactosidase is an enzyme that will remove galactose residues from an oligosaccharide. What are the products of β - galactosidase treatment of raffinose ?
One or more of the compounds shown below will satisfy each of the following statements. Not all compounds may be used; some may be used twice. Put the number(s) in the blank. (1) Found in chitin. (2) An L-saccharide. (3) The first residue attached to asparagine in N-linked glycans. (4) A uronic acid. (5) A ketose. CH,OH CoO COO OH H H H H ОН Н но OH OH H OH H HO OH H NHC- CH, Oso, OH (a) (b) (c) CH,OH CH,OH CH,OH C=0 CHOH C=0 H-C- OH CH,OH но -с-н ČH,OH CH,OH (d) (e)
a. Is the disaccharide below a non-reducing sugar? yes or no b. The glycosidic linkage in the disaccharide is what β-(1-2) linkage, α-(1-2) linkage, β-(1-4) linkage, or α-(1-4) linkage? c. The products of hydrolysis of the disaccharide (which of the ff.) α-galactose and α-ribose α-glucose and α-fructose α-fructose and α-galactose α-glucose and α-galactose

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