Concept explainers
(a)
Interpretation:The structure of glutamic acid exists at
Concept introduction:The glutamic acid belongs to the class of alpha amino acids. It is used in the biosynthesis of proteins. The molecular formula of glutamic acid is
(b)
Interpretation:The structures for the glutamic acid are formed by the addition of one, two and three equivalents of base are to be identified.
Concept introduction:The isoelectric point is the point where
(c)
Interpretation:The structure of monosodium glutamate is to be proposed.
Concept introduction:The glutamic acid belongs to the class of alpha amino acids. It is used in the biosynthesis of proteins. The molecular formula of glutamic acid is
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Organic Chemistry
- Which 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_forwardWhat special role does the amino acid cysteine have in the peptides vasopressin and oxytocin?arrow_forward(a) How many tripeptides can be made from glycine, alanine, and leucine, using each amino acid only once per tripeptide? (b) Write the structural formulas of these tripeptides and name them in the shorthand abbreviation used for showing amino acid sequences.arrow_forward
- Draw a segment of the backbone of a protein that is long enough for three peptide linkages to be present.arrow_forwardTo which family of mirror-image isomers do nearly all naturally occurring amino acids belong?arrow_forwardWhat functional groups are found in all amino acids? How many different amino acids are found in naturally occurring proteins?arrow_forward
- Consider 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_forwardFor 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_forwardWhat characteristics indicate that amino acids exist as zwitterions?arrow_forward
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