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?
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- 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 ?
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- In each of the following two groups of amino acids, which amino acid would be the easiest to distinguish from the other two amino acids in the group, based on a titration? (a) gly, leu, lys (b) glu, asp, serWhat type of noncovalent interaction occurs between the glutamine and threonine side chains? Draw the structures of these amino acids to show the interaction.Draw the structure of the α-keto acid formed by the transamination of each amino acid: (a) tyrosine; (b) asparagine.
- What is the secondary structure of glutelin? Are there many or few alpha helices, beta sheets?Name the α-ketoacid that is formed by the transamination of each of the following amino acids: (a) Alanine (d) Leucine (b) Aspartate (e) Phenylalanine (c) Glutamate (f) TyrosineSome amino acids are described as ketogenic while others are called glucogenic. What is different between these two general groups of amino acids?
- What is the predominant form of each of the following amino acids at pH = 11? What is the overall charge on the amino acid? (a) valine; (b) proline; (c) glutamic acid; (d) lysineHow many carbon atoms are present in the R group in each of the following standard amino acids? Please see picture. Thank you!What is a glucogenic amino acid? Give three examples.
- Over time, the glutamine residues of polypeptides are susceptible to deamidation, a reaction in which the amide group is replaced by a carboxylate group. What amino acid is produced when glutamine is deamidated?How many protein subunits are combined to make glutelin?Which functional group(s) shown above is (are) present in all amino acids?