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- V-A. Which of the following amino acids will elute first in a cation-exchange column using a buffer at pH 7? 1. Asp or Lys 2. Arg or Met 3. Gly or Val 4. Ser or Ala- Keto counterparts. Name the a-ketoacida-ketoacid that is formed by the transamination of each of the following amino acids: Co, a. Alanine b. Leucine c. Aspartate d. Phenylalanine e. Glutamate f. TyrosineODD MAN OUT. Which of the following is not related to the other choices below? adenylyl cyclase inositol 1,4,5-trisphosphate (IP3) alpha-subunit of heterotrimeric G-proteins sugar receptor
- The allosteric site 1). Draw a representation of an allosteric binding site of an enzyme. must bind an allosteric modifier that maintains three hydrophobic regions, a polar charged region and two regions of hydrogen bonding. You choose the order or organization of the characteristics in the allosteric site - label all regions. Details the allosteric site is composed of faces of two separate beta sheets and two separate alpha helices. You might decide that each beta sheet or each alpha helix contributes one amino acid R group to the allosteric site or you may decide that one of the beta sheets or one of the alpha helixes contributes two or more amino acid R groups to the allosteric organization. Your choice but please show R group structure in the allosteric site!ODD MAN OUT. Which of the following is not related to the other choices below? adenylyl cyclase alpha-subunit of heterotrimeric G-proteins inositol 1,4,5-trisphosphate (IP3) sugar receptortrue or false1. In the structural characteristics of a nucleotide, the phosphate subunit is bonded to the sugar subunit.2. In the structural characteristics of a nucleotide, the nitrogenous base subunit is bonded to the phosphate subunit.
- cotton. Which aspect of the structure of cellulose accounts for its strength? Cellulose is an abundant structural polysaccharide found in plant cell walls, wood, and interchain hydrogen bonding between extended molecular chains repeating unit of N-acetylglucosamine a(1→4) linkages between glucose units branches that occur every 12-30 residues forms a helical conformation in water Which of the following is not correct about chitin? fundamental constituent of the exoskeletons of crustaceans, insects, and spiders b) chitin chains form extended ribbons that pack side-by side a) similar to cellulose but with repeating units of N-acetyl-D-glucosamine c) d) found mainly in the liver in humans, making up as much as 10% of liver mass stacked sheets of chitin strands are stabilized by intrastrand, interstrand, and intersheet hydrogen bondsNH3 gala. S Co A C H₂ R-C S CH₂ HN ĐÌNH ΝΗ CH₂ CH₂ NH 3. Compare and contrast how thiolase and chymotrypsin creates and stabilizes its intermediates.in human 2. Human xanthine oxidase catalyzes the oxidation of hypoxanthine to xanthine and can further catalyze the oxidation of xanthine to uric acid. For the treatment of hyperuricemia and gout. several medications are used to inhibit the activity of xanthine oxidase and reduce the production of uric acid. You are a biochemist and just discovered a chemical that can inhibit the activity of the human xanthine oxidase. When analyzing its mode of inhibition, you found that the enzyme inhibitor complex requires 450 kJ.mol to dissociate and that it displays kinetics somehow similar to noncompetitive inhibition. You sent your inhibitor to the ministry of health for approval as a medication for gout. Based on the data provided, are they going to authorize it as a medication or not? Explain?
- Be sure to answer all parts. Give the amino acid sequence of an octapeptide that contains the amino acids Lys, Pro, Tyr, Ile (2 equiv) , Gln, Trp, Phe, and forms the following fragments when partially hydrolyzed with HCl: Lys–Ile-Phe-Pro, Phe-Pro-Gln-Tyr, and Trp-Ile-Lys.Required partner. Aminotransferases require which of the following cofactors: a. NAD+/NADP+NAD+/NADP+ b. Pyridoxal phosphate c. Thiamine pyrophosphate d. Biopterin. A nervous polecat. Pyrrolysine (Pyl, O) and Selenocysteine (Sec, U) are two uncommon amino acids. Knowing that these amino acids exists, translate the following amino acid sequence into one – letter code: Thr – Trp – Ile – Thr – Cys – His – Tyr – Leu – Ile – Thr – Thr – Ile – Glu – Phe – Glu – Arg – Arg – Glu – Thr – Ala – Arg – Glu – Asn – Thr – Tyr – Pyl – Sec – Met – Ala – Leu – Phe – Pyl – Tyr.