7) the amino acid below attached to PLP as an imine. Hydrolyze the product amino acid off with water. Don't worry about stereochemistry. Show how PLP can carry out the following conversion. Start the mechanism with PLP, H20 H NH3 CO2H + PI NH2 H OH
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PLP or Pyridoxal phosphate is an enzyme which has the ability to act as an electrophilic catalyst that stabilizes different types of carbanionic reaction intermediates. It catalyzes myriad reactions and forms internal lysine derived aldimine.
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- In titration of Amino Acids: Show the reaction involved in the titration showing all three species at low, neutral, and high pH.Use the given experimental data to deduce the sequence of anoctapeptide that contains the following amino acids: Ala, Gly (2 equiv),His (2 equiv), Ile, Leu, and Phe. Edman degradation cleaves Gly from theoctapeptide, and carboxypeptidase forms Leu and a heptapeptide. Partialhydrolysis forms the following fragments: Ile–His–Leu, Gly, Gly–Ala–Phe–His, and Phe–His–Ile.Based on our pka's table, pKa1 of -COOH group of Cys = 1.71 pKa2 of -NH2 group of Cys = 10.78 pKa3 of side chain group of Cys = 8.33 If pKa is different, will the buffer change??
- Which of the following is the result of the hydrolysis of 5'-CTAGTTC-3' at the a side? 2 pC, 3 pT, pA, pG 2pCp, 3 pT, pA, pG, pC-OH pCp, 3 Tp, Ap, Gp, C-OH pCp, 3 pT, pA, pG, pC-OHDraw the tripeptide gly-glu-phe with all ionizable groups in their predominant state at pH 7.0.The pl of alkaline phosphatase is 4.5; the pl of the DEAE cellulose is 10.5. We used a buffer of pH 7.4 to run a DEAE-cellulose as anion exchange column? Explain how did this work?
- Write the reversible reactions with its corresponding enzymes of Dehydration via Hydrolysis reaction. A.) A tripeptide between lysine, alanine and argininelooking at ABG's, if ph is normal, Bicarb is alkaline, and paCO2 is acidic...what do you say about it? its not clearly in any of the 4 states, partially compensated, etc pH 7.37 HCO3 45 PaCO2 66.Draw the structure of the products formed when Arabinose shown above undergoes the following reaction: Tollen's reagent (include side product) Benedict's reagent (include side product) Oxidizing enzyme to produce alduronic acid Reducing agent like NaBH4 with Ethylamine (CH3CH2NH2) do everything for upvote. no upvote if incomplete
- The Keq for the reaction of water with water is called Kw H2O + H2O ⇔ H3O+1 + OH-1 [H3O+1][OH-1] Kw = ––––––––––––– = [H3O+1][OH-1] = (1 x 10-7)2 = 1 x 10-14 [H2O]2The investigators reported that the sphingosine kinase enzyme attached to the DEAE column when Tris was used as a buffer, but not when a phosphate buffer at the same pH was used. Explain the difference in behavior. The structure of the conjugate base of the Tris buffer is shown below. Hint: consider what charges all these molecules have at pH 7.4Oils can be converted to fats by a commercial process catalyzed bynickel which is called partial hydrogenation. In relatively mild conditions (180ºC and pressures of about 1.33 atm) a sufficient number of double bonds are hydrogenated and solidify liquid oils. This solid material, margarine, has a consistency similar to butter. Come up with a practical reason why oils don'tthey are completely hydrogenated during commercial hydrogenation processes.