Concept explainers
(a)
Interpretation:
The amino acid shown in the ball and stick model with all uncharged atoms should be identified.
Concept Introduction:
Amino acids are organic compounds containing two
(b)
Interpretation:
The one-letter and three-letter abbreviations for the given amino acid should be determined.
Concept Introduction:
Amino acids are organic compounds containing two functional groups namely amino and carboxylic group. Amino group is attached to the alpha carbon, carbon adjacent to the carbonyl group making them alpha amino acids.
(c)
Interpretation:
The form of amino acid present at pH 11 should be drawn.
Concept Introduction:
Amino acids are organic compounds containing two functional groups namely amino and carboxylic group. Amino group is attached to the alpha carbon, carbon adjacent to the carbonyl group making them alpha amino acids.
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General, Organic, & Biological Chemistry
- Consider the tripeptide leucylvalyltryptophan. a. Specify its structure using three-letter symbols for the amino acids. b. How many peptide bonds are present within the peptide? c. Which of the amino acid residues has the largest R group? d. Which of the amino acid residues, if any, has a basic side chain?arrow_forwardConsider the tripeptide tyrosylleucylisoleucine. a. Specify its structure using three-letter symbols for the amino acids. b. How many peptide bonds are present within the peptide? c. Which of the amino acid residues has the largest R group? d. Which of the amino acid residues, if any, has an acidic side chain?arrow_forwardIdentifying Amino Acids Which of the following molecules is an amino acid?arrow_forward
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- Draw a segment of the backbone of a protein that is long enough for three peptide linkages to be present.arrow_forwardWhich of the following are true concerning the chemical bond that forms between the carboxyl (RCOOH) group of one amino acid and the amino (RCNH2) group of another? a.The bond is called a peptide bond. b.It is formed by inserting a water molecule between them. c.It is formed by a dehydration reaction. d.A polypeptide has more of these bonds than a protein.arrow_forwardHow many different primary structures are possible for a four-amino-acid segment of a protein if the segment contains a. three glycine units and one alanine unit b. one glycine, one alanine, one valine, and one cysteine unitarrow_forward
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