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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Chapter 9, Problem 11P
Draw (using Haworth projections) the fragments of xylan and glucomannan structures shown on page 295.
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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_forwardConsider the peptide Lys-Ser-Glu-Cys-His-Tyr. For the drawings requested below,please show in zig-zag style, from amino to carboxy terminus, with correctstereochemistrya. Draw the predominant form at pH = 2b. Draw the predominant form at pH = 5c. Draw the predominant form at pH = 7d. Draw the predominant form at pH = 12arrow_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_forwardThe 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_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
- What would the following sequence of dodecapeptide M be? My best guess would be option Carrow_forwardA peptide with the primary structure Lys-Arg-Pro-Leu-Ile-Asp-Gly-Ala must be synthesized by the methods developed by Merrifield. Calculate the percentage of the peptides synthesized that will be full length and have the correct sequence if the addition of each amino acid residue is 96% efficient. Do the calculation a second time but assume a 99% efficiency for each cycle. full-length peptides with the correct sequence if 96% efficient: full-length peptides with the correct sequence if 99% efficient: % %arrow_forwardThe melanocyte-stimulating peptide hormone α-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 α-melanotropin, using data in as shown.arrow_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, using data inTablearrow_forwardConsider the peptide Trp-Arg-Glu-Cys-Gly-Tyr. For the drawings requested below, please show them in zig-zag style, from amino to carboxy terminus, with correct stereochemistry Draw the predominant form at pH = 2 Draw the predominant form at pH = 5 Draw the predominant form at pH = 7 Draw the predominant form at pH = 12arrow_forwardSolve (a) , (b), (c), and (d). All is one problem.arrow_forward
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