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- Draw the α-l-glucopyranose sugars using Haworth projections:Unbranched homopolymer of N-acetyl glucosamine is : 1.Cellulose 2.Chitin 3.Curcumin 4.Concanavalin Awhat are the molecular way to diagnose Lactose intolerance disorder ? describe in detail about diagnostic phenomena of lactose intolerance and possible treatment.
- describe a detailed experimental procedure for the chemical synthesis of proteins with the α-ketoacid hydroxylamine (KAHA ligation), using (S)-5-oxaproline (Opr) as a key building block.Define the term GABA (gamma-aminobutyric acid)?Briefly describe the function of uridine triphosphate (UTP) in carbohydratemetabolism.
- Propose a plausible enzyme mechanism for triose kinase, the enzyme that catalyzes the conversion of glyceraldehyde to glyceraldehyde-3-phosphate. You may use "B:" for a general base amino and "H-A" for a general acid amino acid if needed.Phosphopentose isomerase interconverts the aldose ribose 5-phosphate and the ketose ribulose 5-phosphate. Propose a mechanism.Use the two Fischer projections shown below to draw the Haworth projection of these two sugars linked by an a(1-2) linkage, with the ß isoform of the ketohexose. H H ㅎ HO H H OH OH ОН Н НО CH₂OH 애,애애 OH CH₂OH OH H OH OH OH I OH CH₂OH OH OH OH Eng са CH2OH CH2OH OH OH ОН ОН CH₂OH Н OH Н Н OH Н T I CH₂OH CH₂OH OH OH OH CH₂OH CH₂OH Н CH₂OH CH₂OH ОН OH OH НО OH H Н OH CH₂OH
- An enzyme that catalyzes disulfide– sulfhydryl exchange reactions, called protein disulfide isomerase (PDI), has been isolated. PDI rapidly converts inactive scrambled ribonuclease into enzymatically active ribonuclease. In contrast, insulin is rapidly inactivated by PDI. What does this important observation imply about the relation between the amino acid sequence of insulin and its threedimensional structure?Homocystinuria is caused by a defect in cystathionine beta-synthase (or 13-synthase), which leads to an accumulation of homocysteine in the blood. This accumulation causes symptoms such as a tall, thin frame, flushed cheeks, and osteoporosis (thinning of the bones). These individuals should limit their intake of proteins that contain methionine, such as egg whites. Using your understanding of biochemistry, explain why people with Homocystinuria should not consume egg whites and other such proteins.Compare and contrast lactose intolerance with galactosemia.(Hint: Make a table.)