. Draw the structure of the omega-6 fatty acid 16:1. Give the (simplified) systematic name of the fatty acid.
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1. Draw the structure of the omega-6 fatty acid 16:1. Give the (simplified) systematic name of the fatty acid.
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- Draw the structure of the omega-6 fatty acid 16:1.1. For the following trisaccharide: a. Provide the abbreviated name b. Draw the chemical structure using Haworth projections c. Identify the trisaccharide as reducing or nonreducing. Label the nonreducing and reducing ends (if present) of the molecule. O-B-D-N-acetylgalactofuranosyl-(1>4)-a-D-mannopyranosyl-(1>6)-D-3-deoxyglucopyranose1. 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.
- 5. Draw an approximate titration curve of glycine. Label the approximate isoelectric point of the glycine on the curve and be sure to label the axis of the graph. Pk1 is 2.35 and pk2 is 9.78 for glycine. 6. Draw the major amino acid form (s) you expect to find at pH2.35. In the titration curve above. Please answer both 5 and 6VII. 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?10. o . Briefly discuss Ramchandran plot. . What is quaternary structure of proteins? Mention the role of various bond in its structure with the help of an example give its biochemical function. What are liposomes? Discuss their role in medicine. . Differentiate between cerebroside and ganglioside and one disorder associated with each. R
- identify the amino acid described. state the name, one-letter abbreviation, and draw the structure at pH 12.0 a non-polar essential amino acid capable of donating 1 carbon moiety in metabolism1. Draw the structures of two dipeptides: aspartic acid-glutamine and methionine-isoleucine with NH₂ and COOH at the amine and carboxylic acid ends. Show the abbreviations for both dipeptides using three-letter abbreviations and 1-letter abbreviations for the amino acid residues.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.
- Fill in ..... (1) the complete systematic names for sugars A, B and C (remember to you pyranosyl or furanosyl because 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. HO OH GED A HO OH a-L-psicofuranose (1➜6)- (1➜4)- a-D-idopyranose HO OH B OH OH OH OH SUGAR A SUGAR B SUGAR CConsider the second titration. 0 0 0 0 0 0 0 ☐☐☐ PH 100/ | 3 14.0 4 12.0 2 8.0 6.0 Select the pK, values of each functional group observed on the titration curve. 4.0 2.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 equivalents of [OH"] Identify which amino acid is being titrated. alanine aspartate histidine asparagine6. b. Draw a box around the disulfide bridge in oxytocin, if present, or write "none". 7. Mark each peptide bond in oxytocin by making the corresponding line in the structure thicker or marking it with a different color. The first one is shown for you as an example (in dark orange). 8. Number the central carbon of each amino acid in oxytocin by pointing a small arrow to it or by circling the corresponding vertex in the image. Numbers 1 and 2 indicate the central carbons of the first and second amino acids of oxytocin, and are shown for you as an example. 9. Fill out the following table, listing amino acids that make up oxytocin in order, from the N terminus to the C terminus, characterizing each amino acid by the properties of its R group (side chains), and briefly indicating the reasoning for the characterization. You may consult amino acid groupings by category in the slides (or the textbook, p.49), but you must explain the reasoning for each in your own words. CO 1 AA# Abbre- Full…