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- Based on this graph, it appears that carboxylesterase is most active at a pH of A. 3.5B. 1.5C. 5D. 4Explain the observation made when papase is added to the reaction catalyzed polyphenoloxidase?Draw the structures of the activated carbon groups bound to thiamine pyrophosphate in three enzymes that contain this coenzyme. Hint: Keto–enol tautomerism may enter into the picture.
- 1, Using Model 10.9, draw the structure of the substrates of the pentose phosphate pathway and write down the enzymes and coenzymes that are involved in the reactionWrite out the balanced chemical equation for the FIRST round of oxidation of C16:cis-9.Draw me the inhibition reaction mechanism of Cysteine Protease Inhibitor (E64). How the epoxide ring is opening because of the reaction with the thiol group of cysteine and what product are being made. Please draw with arrow pushing and also explain the reason of each attack.
- 1.Why do you think glutathione occurs in a concentration as high as glucose? 2.Explain why glutathione must be transported from cytosol to mitochondria. 3.Explain why glutathione can confer therapeutic benefit when taken orally.Inhibitor X exerts which of the following effects on the above enzyme (maltase)? (inhibitor X changes maltase activity to a V o of 0.10 mM per minute when [S] = 0.125 mM, and a V o of 0.25 mM per minute when [S] = 0.50 mM)Hi, help please. Discuss each method of regulating phosphofructokinase below as indicated by the circle. Discuss 1.) The type of regulation occurring, 2.) What compound or condition performs the regulation, 3.) How/why it influences the enzyme activity.
- Put the steps of the chymotrypsin's enzymatic reaction in order of events from #1-10. -Tetrahedral intermediate collapses and product 2 released. -Aromatic R group of polypeptide substrate is positioned in hydrophobic pocket and the carbonyl of that residue is positioned in the oxyanion hole -His57 deprotonates Ser195 -Formation of acyl-enzyme intermediate -Triad in original form with Asp102 hydrogen bonding with His57 and His57 hydrogen bonding with Ser 195. -Tetrahedra intermediate collapses and product 1 released -H2O enters active site of chumotrunsir -Ser195 does nucleophilic attack on carbonyl of substrate positioned in oxyanion hole -His57 deprotonates H20 -H20 does nucleophilic attack on carbonyl of substrate in oxyanion holeexplain how α-tocopherol and ascorbate work together in suppressing the oxidation of polyunsaturated fatty acidsOne 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.