IX. Insulin, a hormone vital in blood sugar regulation and having a polypeptide chain with disulfide linkages, loses its regulatory activity when heated at nearly 100°C for 5-10 minutes. Explain the molecular basis of this observed thermal property of insulin relative to its native structure and function. I--
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- If phenylalanine was not an essential amino acid, would diet therapy (the elimination of phenylalanine from the diet) for PKU work?IX. Insulin, a hormone vital in blood sugar regulation and having a polypeptide chain with disulfide linkages, loses its regulatory activity when heated at nearly 100°C for 5-10 minutes. Explain the molecular basis of this observed thermal property of insulin relative to its native structure and function. Use not more than 10 short sentences for this itemInsulin-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.
- Insulin dependent diabetes is often accompanied by high levels of triacylglycerols in the blood. Suggest a biochemical explanation.A plant breeder has developed a new frost-resistant variety of tomato that contains higher levels of unsaturated fatty acids in membrane lipids than those found in standard tomato varieties. However, when temperatures climb above 95°F, this frost-resistant variety dies, whereas the standard variety continues to grow. Provide a likely explanation of the biochemical basis of increased tolerance to cold and increased susceptibility to heat of this new tomato variety.One mechanism by which lead exerts its poisonous effect on enzymes can be stopped by chelation therapy with EDTA. Describe this type of lead poisoning and explain why it is reversible.
- 44. Effects of clofibrate. High blood levels of triacylglycerides are associated with heart attacks and strokes. Clofibrate, a drug that increases the activity of peroxisomes, is sometimes used to treat patients with such a condition. What is the biochemical basis for this treatment? Please Demonstrate and explain.Glucosidase I catalyzes hydrolysis of specific glucosidase I is a synthetic trisaccharide, glucose-al-2- glucose-al-3-glucose-a-O(CH₂) #COOCH3. Kinetic measurements oligosaccharides containing glucose. obtained using this trisaccharide as substrate in the deoxynorjirimycin at concentrations of 50 μM (), 100 μM absence (x-x) and presence of the inhibitor 1- A) were used to prepare the (-), and 200 μM (4 Lineweaver-Burk plot below: b) Page 3 12) 7. a) V/V (nmol/hr)-1 1.S 1.0- 0.5 1/Trisaccharide (mM)-! Estimate the values for Vmax and KM for the trisaccharide substrate in the absence of the inhibitor. 0.0 -1.0 0.0 One substrate for 1.0 2.0 Determine whether inhibition by 1-deoxynorjirimycin is competitive, non-competitive or neither.Gout is a medical condition usually caused by a deficiency of the salvage enzyme hypoxanthine-guanine phosphoribosyltransferase. Uric acid accumulates in the joints and causes pain, inflammation, and in advanced disease gouty tophi. Allopurinol, an inhibitor of the enzyme xanthine oxidase, is used to treat chronic gout. Explain briefly the biochemical basis for this treatment.
- What do you mean by dehydogenase. Elaborate on their function in general ?Unbranched homopolymer of N-acetyl glucosamine is : 1.Cellulose 2.Chitin 3.Curcumin 4.Concanavalin AGalactose 1-phosphate: UDP-glucose uridyltransferase (GALT) is an enzyme important for the catabolism of galactose. Patients with GALT deficiency present within days of birth with feeding difficulty, fatigue, jaundice and liver problems, and failure to thrive. In addition, a buildup of galactose and its metabolites are present in the bloodstream. GALT catalyzes the following reaction in galactose catabolism. NOTE that GALT is reversible!! Classify this enzyme and explain why you classified it in this way.