Draw the structure of the a-keto acid formed by the transamination of each amino acid: (a) tyrosine (b) asparagine draw structure ... draw structure
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- Based on your knowledge of the natural amino acids, what would you expect pKa of the sidechain of beta-(aminomethyl)succinic acid to be? Draw an appropriate titration curve for beta-(aminomethyl)succinic acid, labeling the axes, indicating the equivalence points and the pKavalues, and use a drawing to show the protonated/deprotonated forms.Are all the amino-acids soluble in water? Explain why?From the peptide chain: Met-Tyr-Phe-Arg-Ile-Glu-Asn-Asp-Ser, draw the structure of the product formed when reacted with Elastase
- Given this short polypeptide: Met-Ala-Gly-Ser A) Which is the amino terminal amino acid? B) How many amino acids are in this polypeptide? C) How many peptide bonds are in this polypeptide? D) Which amino acid has the smallest side chain? E) Which amino acid contains sulfur?Draw the structure of the α-keto acid formed by the transamination of each amino acid: (a) tyrosine; (b) asparagine.Identify the a-carbon of aminolevulinic acid.
- What type of noncovalent interaction occurs between the glutamine and threonine side chains? Draw the structures of these amino acids to show the interaction.How many peptide bonds in this peptide chain LEU-ILE-LEU?Describe the structures of glutamine and alanine. What are the characteristics of the R-groups? What other features of these amino acids make them important as they relate to metabolism?
- Name and draw the structure of the a-keto acid resulting when each of the following amino acids undergoes transamination with a-ketoglutarate: (a) aspartate, (b) glutamate, (c) alanine, (d) phenylalanine.Identify the amino acids contained in each of the following tripeptides.(a) Draw the structure of the two possible dipeptides that can be formed by combining glycine and asparagine. (b) In each dipeptide, label the N- and C-terminal amino acids. (c) Name each peptide using three-letter symbols.