25) Below are two amino acids: cysteine and histidine.a) Draw the reaction mechanism of a dehydration synthesis reaction between cysteine andhistidine below:HSHProduct 1NOHHNHb) Draw two different products of the dehydration synthesis reaction from part a). Prove thatthese are two different products by labelling the N and C termini, peptide bond, and R-groups ofeach product.Product 2OH

A peptide bond is formed between the carboxyl group of N-terminal amino acid residue and the amino…

Answered: 25) Below are two amino acids: cysteine…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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A) Refer to the figure below, Identify and explain the two types of reactions, and describe what are the importance of these reactions to our bodies. Reaction 1 H Monomer Reaction 2 H H OH + H H H₂O H H₂O OH + H H OH OH + H H₂O H₂O OH OH + H OH OH OH OH B) What are the main chemical interactions that determine and maintain the quaternary structure of proteins. Also, what are the conditions that can alter these interactions? [
This amino acid is: (Note that the non-ionized form is shown; remember that backbone groups are irrelevant to classification) a) Polarized (+) charged b) Nonpolar c) Polar and (-) charged d) Polar uncharged
Φ and ψ in the Ramachandran plot (below) are: a) Rotational angles around the bond between the α-carbon and N-H (Φ) and C=O (ψ). b) Amino acid solubility in octanol (Φ) and water (ψ). c) Hydrogen bond angles in α-helices (Φ) and β-sheets (ψ). d) Amino acid solubility in water (Φ) and octanol (ψ).
a. what general category would you place this molecule in of the four categories of biomolecules? b. List 5 functional groups you see in this molecule?
Ramipril is an ACE inhibitor that contains an ester, amide, and other functional groups. Part: 0/2 Part 1 of 2 Hydrolysis of the ester in ramipril forms ramiprilat, which is the active ACE inhibitor. Modify the structure of ramipril below to show the structure of ramipriat. ОН H x □: ✓
Using the picture provided, match the correct name of each of the functional groups highlighted in blue.
9. Titration of valine by a strong base, for example NaOH, reveals two pK's. The titration reaction occurring at pK2 (pK2 = 9.62) is: a) —СООН + Он -> —соо" + Н20. b) -COOH + -NH2 -> -COO" +-NH2*. c) -co0 +-NH2* ->-COOH +–NH2. d) –NH3* + OH" -> –NH2 + H2O. e) –NH2 + OH -> –NH + H2O. 10.In a highly basic solution, pH = 13, the dominant form of glycine is: а) NH2—CH2—СООН. b) NH2-CH2-coO". c) NH2-CH3*-coo. d) NH3*-CH2-COOH. e) NH3*-CH2-coo".
2) Consider the following disaccharide which was formed from the breakdown of a polysaccharide found in plant material. ОН Glycosidic linkage: H H OH H H НО H H. OH H. ОН OH H НО H ОН a. Label the glycosidic linkage above in the following format: a/B(# → #) b. Would you expect this disaccharide to have been formed from amylose or amylopectin? c. Describe at least two chemical tests that would give insight into the structure of this disaccharide, assuming you've isolated it and wanted to elucidate the structure from scratch. Include detail on not only the tests you would use but what results you would expect to get given the structure above. Assume you can analyze the structure of any monosaccharide you get from your chemical tests.
25) Below are two amino acids: cysteine and histidine. a) Draw the reaction mechanism of a dehydration synthesis reaction between cysteine and histidine below: HS H Product 1 OH ox HN H b) Draw two different products of the dehydration synthesis reaction from part a). Prove that these are two different products by labelling the N and C termini, peptide bond, and R-groups of each product. Product 2 OH
I. Write a balanced chemical reaction, complete with chemical structures, to show the hydrolysis of iso-C to U. II. Draw the mechanism by which iso-G converts to its "minor tautomeric form complementary to U." You may propose either an acid or base catalyst. III. Draw chemical structures of the minor tautomeric form of iso-guanine (iso-G) and uracil (U), showing the non-covalent bonding (H-bonding) interactions between them.

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