Concept explainers
(a)
Interpretation:
The number of tripeptides obtained from amino acids valine, lysine and phenylalanine needs to be determined.
Concept Introduction:
Amino acids are organic compounds containing amino as well as carboxylic groups. The general structure of an amino acid is shown as follows:
Here, R group is different for different amino acids.
These amino acids are linked through peptide bonds and results in the formation of protein. Thus, amino acids are simple unit of a peptide chain.
(b)
Interpretation:
The structural formula of tripeptides and their name according to shorthand abbreviation of amino acids needs to be determined.
Concept Introduction:
Amino acids are organic compounds containing amino as well as carboxylic groups. The general structure of an amino acid is shown as follows:
Here, R group is different for different amino acids.
These amino acids are linked through peptide bonds and results in the formation of protein. Thus, amino acids are simple unit of a peptide chain.
Want to see the full answer?
Check out a sample textbook solutionChapter 23 Solutions
Chemistry: Principles and Reactions
- What functional groups are found in all amino acids? How many different amino acids are found in naturally occurring proteins?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_forwardDraw a segment of the backbone of a protein that is long enough for three peptide linkages to be present.arrow_forward
- For the tripeptide SerArgIle which amino acid residues a. are hydrophilic b. are hydrophobic c. possess polar neutral R groups d. participate in two amide linkagesarrow_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_forwardFill in the blanks in the following statements: aThe order of the amino acids in a protein is the ______ structure of that protein. The _______ of the backbone chain of a protein is the secondary structure of that protein. The tertiary structure of a protein describes the ______ of the secondary structure. b Hydrogen bonding between the oxygen atoms of carbonyl groups and the hydrogen atoms of amide groups in the same protein chain gives the secondary structure, called the ______. c Hydrogen bonding between the oxygen atoms of carbonyl groups and the hydrogen atoms of amide groups in the adjacent protein chain gives the secondary structure, called the ______.arrow_forward
- Using the single letter abbreviations A, V, and L, as given in Table 22-1, list the tripeptides formed if alanine, valine, and leucine are all mixed together and peptide bonds are allowed to form in all possible combinations.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_forwardConsider 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_forward
- Why is the phrase unstructured segment of a protein somewhat of a misnomer?arrow_forwardIn what way is the structure of glycine different from that of the other 19 common amino acids?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_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningWorld of ChemistryChemistryISBN:9780618562763Author:Steven S. ZumdahlPublisher:Houghton Mifflin College DivWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning