b. Identify (name) each of the following two monosaccharides A and B.НООНОНПоAОН-ОНно-НоНоОНвОНc. 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 ringconformation form and determine if the latter is a ¹C4 or a 4C₁ conformation.

In the general chair conformation of pyranoses, the 'O' atom within the ring would be on the top…

Answered: Identify (name) each of the following…

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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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
a. Identify the disaccharide in the photo. b. the glycosidic linkage in this disaccharide is what? α (1-2) linkage β (1-4) linkage α (1-4) linkage β (1-2) linkage c.Is the disaccharide below a non-reducing sugar?
Write the name for the trisaccharide depicted below (for example, of the form a - D - xylofuranose). Be sure to include if the sugars are in the pyranose or furanose conformations in the name and include the linkages between sugars (for example, (2 - - > 4)). CH₂OH ОН OH н ОН -CH₂ H\H ОН н н ОН CH2OH н ОН но н н ОН
Rhaminose is a trisaccharide comprised of fructose (B(2→1), fructose (B(2→1) and glucose. Draw the trisaccharide with the hexose in its chair conformations. Indicate the anomeric carbons, the non-reducing end and any other structural details of interest.
Complete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose D-Mannose D-Xylose L-Lyxose
Complete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose D- Xylose
Н. Based on what you know about the classification and structure of galactose, HO- what possible results would you obtain if H- ОН Но- H- H. но- you were to perform the following tests? (+) negative (-) and explain in one sentence) ОН (indicate whether positive or ČH2OH Test Result Explanation Benedict's Barfoed's Seliwanoff's lodine Test I I
D-Glucose and D-Galactose are A H D C=0 H-C-OH OH C-H H-C-OH H_C-OH CH₂OH D-Glucose ketoses epimers pentoses enantiomers H ... н-с-он OH-C-H он-с-н H-OH CH₂OH D-Galactose
Complete the following table by providing the Fischer and Haworth Projections of the given sugars. (Please be careful with the alpha and beta, and the complete and abbreviated) (not a graded question) Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose
When a certain trisaccharide is completely methylated (i.e. all of the free OH groups have been converted to OCH3 groups) and then hydrolyzed (i.e. all of the glycosidic linkages have been broken) equal molar amounts of 2,3,4,6-tetra-O-methyl-D-galactose, 2,3,4-tri-O-methyl-D- mannose, and 1,2,4,6-tetra-O-methyl-D-glucose are obtained. When this same trisaccaride is treated with beta-galactosidase ( an enzyme that hydrolyzes the indicated glycosidic bond indicted by it's name) it yields D- galactose and a disaccharide. Treatment of the resulting disaccharride with alpha- mannosidase yields D-mannose and D-glucose. Draw the structure of the beta anomer of the original trisaccharide.
Raffinose (see prev. question for structure) is not digestible by humans yet is found in foods we eat all the time like beans, cabbage, brussels sprouts etc. What 2 human digestible compounds can Raffinose be broken down into? Just as a side note, Raff is NOT digestible by us, but our helpful gut bacteria break it down for us into the 2 compounds that are the answer to this question. O a-D-glucose O B-D-fructose sucrose a-D-galactose Lactose maltose
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+.

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