Draw a diagram of the tyrosine side chain. Show two ways in which the OH group of this side chain could form a hydrogen bond with a water molecule.
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- You are studying a novel amino acid. It has an alpha-amino and an alpha-carboxylic group, and an ionizable side chain that carries a carboxylic group. A titration curve is shown below. Net charge a CD f 0 1 2 3 4 5 +1 [Select] 0 [Select] 6 7 pH Choose the letter that corresponds to the following charges on this novel acid. +2 [Select] -0.5 [ [Select] -1 [Select] 8 -2 [Select] I 9 10 11 12 13explain the amphipathic compounds in an aqueous solution. please draw the amphipathic behavior of fatty acids in water.Draw a diagram of the aspartic acid side chain in the protonated and unprotonated states. Calculate the ratio of the protonated and unprotonated forms of this side chain that would exist at pH 7 (assume pKa = 4).
- Draw a glycerol bonded to two stearic acids and a phosphate group with an “R” group attached – forming a phosphatidyl ester, please show workDescribe why G-C bonding is stronger than A-T. Why is it important?Explain why amino acid can increase blood glucose. Write the structure of each of the following peptide at pH7 and identify how many peptide bond in each number. Alanyl-phenylalanine- aspartate- cysteine Threonyl- Isoleucyl-methionyl- leucine Lysyl-alanine -Phenylalanyl-tyrosyl- serine
- Make use of the table below in answering the questions asked: Amino acid pK₁ pK₂ pK, Isoleucine 2.32 9.76 Leucine 2.32 9.74 Lysine 2.16 9.06 10.54 Tyrosine 2.20 9.21 10.46 1. Kindly draw manually the structure of tripeptic ILY at pH 7.00 2. Kindly draw manually the most protonated structure of tripeptide ILYThe diversity of functional groups on sugars that can form glycosidic bonds greatly increases the information content of glycans relative to oligopeptides. Consider three amino acids, A, B, and C. How many tripeptides can be formed from one molecule of each amino acid? Now consider three sugars- glucose, glucuronic acid, and N-acetylglucosamine. Use shorthand (eg., Glca(1 → 4)GICUAB(1 → 4)GICNAC) to represent 10 trisaccharides with the sequence Glc-GlcUA-GluNAc. Is your list exhaustive?Draw a phosphorylated tyrosine molecule at physiological pH. Assume that the phosphate group is deprotonated and has a charge of -2. Would the carboxylic acid group of the phosphorylated tyrosine have a lower or higher pKa than that of unmodified tyrosine? Explain.
- The figure below illustrates the molecular structures of two fatty acids. A B H₂C The structural formula of erucic acid and behenic acid с H₂C D erucic acid behenic acid Which of the following best explains why erucic acid is liquid at room temperature but behenic acid is solid at room temperature? O OH The presence of a double carbon to carbon bond in erucic acid prevents the molecule from packing closely together. The lack of any double carbon-carbon bonds in behenic acid causes the molecule to be come polar and therefore packed more tightly. The larger number of carbon atoms in erucic acid prevents the molecule from packing tightly together. OH The smaller number of carbon atoms in behenic acid creates stronger covalent bonds between the carbon atoms allowing for them to pack more tightly together.. Consider the structure of the amino acid aspartic acid. Indicate the hybridization about each interior atom. H HThe diversity of functional groups on sugars that can form glycosidic bonds greatly increases the information content of glycans relative to oligopeptides. Consider three amino acids, A, B, and C. How many tripeptides can be formed from one molecule of each amino acid? Now consider three sugars—glucose, glucuronic acid, and N-acetylglucosamine. Use shorthand (e.g.,Glcα(1S→4)GlcUAβ(1→4)GlcNAc to represent 10 trisaccharides with the sequence Glc-GlcUA-GluNAc. Is your list exhaustive?