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Concept explainers
(a)
Interpretation: The name of given peptide using both the three-letter and one-letter abbreviations of the component amino acids is to be predicted.
Concept introduction: Peptide linkage is formed between the amino group of one amino acid and the carboxyl group of other amino acid with the loss of water molecule. Amino acids are naturally occurring compounds in which the amino group is present on the alpha carbon of carboxyl group. The name of amino acids is represented by the one-letter and three-letter abbreviations.
(b)
Interpretation: The name of given peptide using both the three-letter and one-letter abbreviations of the given component amino acids is to be predicted.
Concept introduction: Peptide linkage is formed between the amino group of one amino acid and the carboxyl group of other amino acid with the loss of water molecule. Amino acids are naturally occurring compounds in which the amino group is present on the alpha carbon of carboxyl group. The name of amino acids is represented by the one-letter and three-letter abbreviations.
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Chapter 29 Solutions
Organic Chemistry
- What characteristics indicate that amino acids exist as zwitterions?arrow_forwardAt room temperature, amino acids are solids with relatively high decomposition points. Explain why.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_forward
- 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_forwardWhich of the following describes the primary structure of proteins? a. The collective shape assumed by all of the chains in a protein containing multiple chains. b. The folding of an individual protein molecule. c. The regular repeated shape of the protein molecules backbone. d. The sequence of amino acids bonded together by peptide bonds.arrow_forwardHow many different primary structures are possible for a four-amino-acid segment of a protein if a. three of the amino acids present must be identical b. the four amino acids must be differentarrow_forward
- How 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_forwardFor the tripeptide GlyAlaCys a. What amino acid is located at the peptides N-terminal end? b. What amino acid is located at the peptides C-terminal end? c. How many peptide bonds are present? d. How many amide linkages are present?arrow_forwardIdentifying Amino Acids Which of the following molecules is an amino acid?arrow_forward
- What functional groups are present in all -amino acids?arrow_forwardIn a pleated sheet secondary structure for a protein a. describe the general shape of the protein backbone b. describe the general locations for the amino acid R groupsarrow_forwardHow many carbon atoms are present in the R group in each of the following standard amino acids?arrow_forward
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- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
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