Biochemistry: Concepts and Connections (2nd Edition)
2nd Edition
ISBN: 9780134641621
Author: Dean R. Appling, Spencer J. Anthony-Cahill, Christopher K. Mathews
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 11P
Draw (using Haworth projections) the fragments of xylan and glucomannan structures shown on page 295.
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Draw (using Haworth projections) the fragments of xylan and glu-
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Chapter 9 Solutions
Biochemistry: Concepts and Connections (2nd Edition)
Ch. 9 - Prob. 1PCh. 9 - -D-Galactopyranose rotates the plane of polarized...Ch. 9 - Provide an explanation for the fact that a-...Ch. 9 - Why is a type O individual considered a universal...Ch. 9 - The disaccharide , -trehalose differs from the ,...Ch. 9 - A reducing sugar will undergo the Fehling...Ch. 9 - Prob. 7PCh. 9 - Prob. 8PCh. 9 - Indicate whether the structures shown are R and S...Ch. 9 - Prob. 10P
Ch. 9 - Draw (using Haworth projections) the fragments of...Ch. 9 - One or more of the compounds shown below will...Ch. 9 - Why do you suppose that the influenza virus...Ch. 9 - Prob. 14PCh. 9 - Are mannose and galactose epimers? Allose and...Ch. 9 - Prob. 16PCh. 9 - Explain in about one sentence why it is important...Ch. 9 - Prob. 18PCh. 9 - Prob. 19PCh. 9 - Prob. 20PCh. 9 - Prob. 21PCh. 9 - Prob. 22PCh. 9 - Prob. 23P
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- Draw (using Haworth projections) the fragments of xylan and glucomannanstructures as shown.arrow_forwardWhat are the sequences of all the possibletripeptides that contain the amino acids aspartic acid, leucine, andphenylalanine? Use the three-letter abbreviations to express youranswer.arrow_forwardConsider the peptide Asp-Lys-Phe-Glu-Asn-Tyr-Gln-Val-Cys. In a single beaker, you treat this peptide with 2 proteases. One protease cleaves at the N-terminus of aromatic R groups and the other cleaves at the C-terminus of polar, non-ionizable R groups. Following the enzymatic digestion, you want to separate your peptide fragments so that you can identify them. You choose to separate the fragments using an anion exchange column. Beginning at pH=6 you apply your peptide fragments to the column and you gradually decrease the pH of the column stopping the separation when the pH of the column equals 4. Omitting chemical structures, write the amino acid sequence of the peptide fragments that are produced from this digest. Write the order that these fragments will elute from the column (if at all). (Relevant pKa values are: 2.1, 3.8, 4.3, 8.3, 9.6, 10.1, and 10.5)arrow_forward
- Calculate the pI for the following tri-peptide: Glu-Arg-Lysarrow_forwardDraw the α-l-glucopyranose sugars using Haworth projections:arrow_forwardWhy is the position of Cys 58 important in 3GRS(GLUTATHIONE REDUCTASE)? When Cys 58 is mutated to GLY 58 how would it impact the 3D structure and function of 3GRS? explain in terms of how Cys and GLY have different properties and how it would impact the function of 3GRS (the binding sites etc.) You can see your structure(3GRS ) here or any other website: https://www.rcsb.orgarrow_forward
- The melanocyte-stimulating peptide hormone a-melanotropin has the following sequence: Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val (a) Write the sequence using the one-letter abbreviations. (b) Calculate the molecular weight of a-melanotropin, a da'arrow_forwardThe following amino acids that are often found inside globulin molecules are () A, Tyr B, Phe C, Asn D, Glu True of false 1. In the de novo synthesis of purine nucleotides and pyrimidine nucleotides, base rings are first synthesized and then corresponding nucleotides are formed with phosphoribose. () 2. Transcription is the process of transferring genetic information from DNA to RNA. DNA is synthesized under the catalysis of RNA polymerase, and the direction of synthesis is from the 5 'end to the 3' end. () 3. The change of protein conformation is caused by the breaking of covalent bonds within the molecule. () 4. In very high and very low pH solutions, amino acids exist mainly in non-ionic form. () 5. The active center of an enzyme usually consists of several amino acid residues adjacent to each other in the primary structure. ()arrow_forwardWhat peptides are expected to be produced when α-melanotropin is cleaved by (a) trypsin, (b) cyanogen bromide, or (c) thermolysin? (as shown)arrow_forward
- Give the correct name for the tripeptide Glu-Asp-Ala. Give the IUPAC name for the tripeptide R-G-Parrow_forwardWhat would the following sequence of dodecapeptide M be? My best guess would be option Carrow_forwardThe enzyme creatine kinase catalyzes the ATP-dependent phosphorylation of creatine. Propose a mechanism for the reaction described using the curved arrow convention. Show the complete structure of the nucleotide.arrow_forward
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