Concept explainers
(a)
Interpretation: A condensed structural formula for the peptide, glycylalanine has to be drawn.
Concept introduction: In the IUPAC naming of a peptide, full name is written for the amino acid which is present on the far right. The other amino acid residues in the peptide receive “shortened” names that end in –yl. The –ine or –ic acid ending of the amino acid names is replaced by –yl.
(b)
Interpretation: A condensed structural formula for the peptide, cysteinylalanylglycine has to be drawn.
Concept introduction: In the IUPAC naming of a peptide, full name is written for the amino acid which is present on the far right. The other amino acid residues in the peptide receive “shortened” names that end in –yl. The –ine or –ic acid ending of the amino acid names is replaced by –yl.
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Organic And Biological Chemistry
- (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_forwardWhat 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_forward
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