help 8 Select a Fischer projection of D-galactose, which is an epimer of glucose with respect to the C4 position.CHOHO-C-HHO-C-HHO-C-HH-C-OHCH₂OHCHOH-C-OHH-C-OHHO-C-HH-C-OHCH₂OH CHOH-C-OHH-O-OHHO-C-HH-C-OHCH₂OHCHOIH-C-OHH-C-OHH-C-OHIHO-O-HCH₂OH

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Answered: Select a Fischer projection of…

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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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
In the following scheme: HH, H₂C-C-C-Coo II HO H • NH, 1 H₂C-C-C-C000 H 2-Amino-3-ketobutyrate ↓ O H,C-C-CH₂-NH₂ Aminoacetone 0 0 H₂C-C-C-H Methylglyoxal H H₂C-C-COO OH D-Lactate O H₂C-C-C000 Pyruvate What molecule is being metabolized? Identify the reaction at each step. If it is an oxidation-reduction prove this is correct by showing oxidation state changes on the atoms in the structure.
Write the one letter code for the oligopeptide Ser-Cys-Ile-Glu-Asn-Cys-Glu and calculate the total charge on it at pH 4.5.
Which of an alpha-D-2,3-di-O-methylglucopyranose or alpha-D-2,3, 6-tri-O-methylglucopyranose represents a glucose unit in glycogen which was originally carrying an (alpha 1-->6) glycosidic bond?
The melanocyte-stimulating hormone a-melanotropin has the following sequence: Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val In the one-letter code of amino acids, this sequence would be: SYSMEHFRWGKPV STSMGHFAWGKPV O SYSMDHFAWGKPV O SYSMEHFAWGLPV
The monosaccharide shown below is the CH₂OH OH OH beta- L- D- alpha- Он OH anomer.
Draw the glycosphingolipid with a head group (as Haworth projection) B-D-GalNac-(1->3)-ß-D-Glc-Sphingolipid. For the fatty acid, draw myristic acid.
Write the products of the oxidation and reduction of D-mannose. HO HO H- H- || C-H II H -ОН -ОН CH₂OH D-Mannose
Methionine is an essential amino acid that can be metabolized to homocysteine. Using the figure below, describe the R-group on homocysteine and how it differs from methionine. Include the functionality of the thiol as part of this discussion.
Draw a glycerol bonded to two stearic acids and a phosphate group with an “R” group attached – forming a phosphatidyl ester, please show work
Draw a triacylglycerol containing three units of 18:3 (9,12,15).
Following are Fischer projections for a group of five-carbon sugars, all of which are aldopentoses. Identify the pairs that are enantiomers. CHO сно H-C- OH H-C-OH H-C- OH но-с — н н-с—он но- ČHOH ČH,OH сно CHO Н-с—он но—с— н H-C- OH H-C-OH но—с—н Н-с—он ČHOH ČH,OH сно сно н-с—он но—с —н но—с— н но -с — н H-C- OH но- C-H ČH,OH ČH,OH

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Select a Fischer projection of D-galactose, which is an epimer of glucose with respect to the C4 position. CHO HO-C-H HO-C-H HO-C-H H-C-OH CH₂OH CHO H-C-OH H-C-OH HO-C-H H-C-OH CH₂OH CHO H-C-OH H-O-OH HO-C-H H-C-OH CH₂OH CHO I H-C-OH H-C-OH H-C-OH I HO-O-H CH₂OH