BIOC 384 Structure and Function of Simple Sugars Q9.1: NutraSweet (aspartame) is not a carbohydrate but rather a modified dipeptide. What is the biochemical explanation for why this molecule is 500 times sweeter in human taste tests than the monosaccharide galactose?
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- REFLECT AND APPLY An inhibitor that specifically labels chymotrypsin at histidine 57 is N-tosylamido-L-phenylethyl chloromethyl ketone. How would you modify the structure of this inhibitor to label the active site of trypsin?MATHEMATICAL The hydrolysis of a phenylalanine-containing peptide is catalyzed by -chymotrypsin with the following results. Calculate KM and Vmax for the reaction. PeptideConcentration(M)Velocity(Mmin1)2.51045.010410.010415.01042.21065.81065.91067.1106Bioactivity and structural novelty of Cephanolide A
- Given the following choices,a. structure of sterolb. what is the structure of a glycolipid?using specific examples explain the biochemical significance of saturated and unsaturated fatty acids.Assignment on KetohexosesConstruct the structure of the following enantiomers or mirror images:1. D and L Fructose2. D and L Allulose3. D and L Sorbose4. D and L Tagatose
- Identification What is the isoelectric pH of casein? What is blue-black colored product called when iodine reacts with starch? What is the main reagent used to isolate myoglobin? What type of hydrolysis will cleave a protein at a peptide bond? What are the building blocks of proteins? What qualitative test is used to detect peptide bonds? What is the positive result for the answer in no. 6? Proline will produce what result in the ninhydrin test? Which component of the Hopkins-Cole reagent will react with tryptophan? The reaction in Fohl’s test will cause the formation of what compound? What type of reaction happens in Pauly’s test? 12-15. What are the principles involved in the isolation of proteins in the experiment? Protein Principle Albumin in milk Casein in milk Myoglobin in ground beef Gluten in wheat flourAbsorbance spectrum of Ninhydrin curve 1,6 1,4 1,2 0,8 0,6 0,4 0,2 100 200 300 400 500 600 700 800 900 -0,2 Wavelength nm - Arginine - Proline -Leucine 2. Discuss the absorption spectra of the 3 amino acids as given in graph 1. 1. Absorbance (OD)Insulin-dependent diabetes is often accompanied by hypertriglyceridemia, which is an excess blood level of triacylglycerols in the form of very low density lipoproteins. Suggest a biochemical explanation.
- 16-24 diastereomers? Explain your answer. Both? when the motecue hasonly che stereocenter then the epiners are encintomers. When the molecule hastwo umor ster Draw Haworth projection formulas for dimers of glucose having the a B1-4 linkage (both molecules of glucose in the B form) a) b) c) an a,a (1-1) linkage a B1-6 linkage between 2 ß-glucose units epime are dia sterplease help me understand asap Please draw by hand a tripeptide of Glu, Gln, and 1 amino acid of your choice (Not Glu or Gln again) at pH 7.0 and 9.0. The only requirement is that the amino acid should be 1 of the amino acids with ionizable R groups. Peptide should have appropriate charges on groups. PleaseOn Dimyristoyl phosphatidylserine, Palmytoyl-Oleoyl Phosphatidylcholine and Sphingomyelin, What is the capacity of each of these to form hydrogen bonds with its neighbours
