-SH is acting as nucleofile as it is attacking the carbonyl carbon in the first step.
Carbonyl C has O so it is electron deficienct.
Thus -SH residue is acting as nucleofile.
B. Describe the following reaction mechanism, circle any amino acid residues in the diagram that are...
14) Which of the following amino acids will by cation-exchange chromatography? following amino acids will be retained longest in the column when sepa Η serne HO-CH-C-COO v. Lysine H3N-CH2CH2CH2CH2CH-co NES NH V. Phenylalanine CH-C–COOH II. Alanine CH3-C-Coo II. Cysteine HS-CH-c-coo® NE 15) What is the product obtained from mild oxidation of the thiol shown below? mild 2R-SH oxidation A) R-S- R B) R-OH C) R-S-S-R DR-OO- RE ) R-S-OH 16) Which bond in the following compound is a peptide bond?...
Amino Acids SW C2 9. Which of the following is an L-amino acid? çoo coo coo HẠN |-R HANH, HẠN –H HÀNH R coo B. 10. The following questions refer to the structures A-E below: (a) Which represents the structure of an amino acid at very high pH? (b) Which is a zwitterion? (c) Which represents the structure of an amino acid at very low pH? (d) Which structure/(s) is/are) not possible? R-CH-COOR-CH-COOH R-CH-COOH R-CH-COOR -CH-COO NH2 NH2 *NH NH2...
11 Department of Biological Sciences BIOCHEMISTRY Test 2.2018 H. Nucleic Acid, Sequencing of DNA: Amino Acids Hydrolysis of salt Laboratory buffers, Polyprotie acids QUESTIONS 1. The DNA strand complementary to the strand 3-GTAGCGTAT-Y' would have the sequence a SLTACOCATAT-3 b.3.CATOXICATA-S c. 3-ATGCGTATA-S" ATATGCGTAS 2. When cytosine is treated with bisulfite, the amino group is replaced with a carbonyl group. Identify the resulting base a. adenine b. guanine c uracil d. thyminee. typoxanthine 3. How many amino acids would be in...
practice complely the follow, + NaOH following (Fill in the Blanks (ose wnds carboxylic Acid + Amine water carboxylic Aad & Alcohol Carboxylic Acid water Esten + H₂O + tre hydrolysis? Amide + H₂O titre hydedlysis Show the reagent / reagents needed to make the following molecolar conversions. Show reagent (s) to the right. Seach=40 HC=CH₂ HC-CH₃ 4 ة= SH please note: the is an aromated ring. It does not atlect the chemistry Hocao 0 ÖzçēH (oxidation? bacco in there...