Concept explainers
(a)
Interpretation: The naturally occurring amino acid to which the given amino acid is similar is to be named. The structure of the tetra peptide containing the synthetic amino acid is to be drawn indicating its chiral carbon atoms.
Concept introduction: When two or more amino acids are linked in a chain, a compound called peptide is formed in which the carboxyl group of each acid is joined to the amino group of the next forming a
To determine: The naturally occurring amino acid which is similar to the given non-naturally occurring amino acid.
(b)
Interpretation: The naturally occurring amino acid to which the given amino acid is similar is to be named. The structure of the tetra peptide containing the synthetic amino acid is to be drawn indicating its chiral carbon atoms.
Concept introduction: When two or more amino acids are linked in a chain, a compound called peptide is formed in which the carboxyl group of each acid is joined to the amino group of the next forming a
To determine: The structure of the tetra peptide containing the synthetic amino acid.
(c)
Interpretation: The naturally occurring amino acid to which the given amino acid is similar is to be named. The structure of the tetra peptide containing the synthetic amino acid is to be drawn indicating its chiral carbon atoms.
Concept introduction: When two or more amino acids are linked in a chain, a compound called peptide is formed in which the carboxyl group of each acid is joined to the amino group of the next forming a
To determine: The chiral carbon atoms present in the synthetic amino acid.
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Chemistry
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- (a) Draw the Lewis structure for the amino acid phenylalanine, showing the amino group and the carboxylic group in their un-ionized forms. (b) Draw the Lewis structure for the zwitterionic form of phenylalanine. (c) Which of these structures will be the predominant form at physiological pH?arrow_forwardWhat special role does the amino acid cysteine have in the peptides vasopressin and oxytocin?arrow_forwardTo which family of mirror-image isomers do nearly all naturally occurring amino acids belong?arrow_forward
- Why is complete hydrolysis of a protein not also protein denaturation?arrow_forwardAre there any 120° bond angles in ibuprofen? Any 180° angles?arrow_forward22-62 Distinguish between intermolecular and intramolecular hydrogen bonding between backbone groups. Where in protein structures do you find one, and where do you find the other?arrow_forward
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