Exam 24: Amino Acids, Peptides, and Proteins

Which of the following amino acids has its α-carbon as part of a 5-membered ring?

In a globular protein, would the side chain of aspartic acid most probably be oriented toward the interior of the protein or outward toward the aqueous surroundings? Explain.

Provide a structure of the dipeptide Ile-Gln at biological pH.

Suggest a method for resolving a racemic acid.

The term ________ is sometimes used to describe peptides which contain four to ten amino acid residues.

Provide the structure of the predominant form of lysine present in an aqueous solution at biological pH.

Provide the structure of the predominant form of alanine present in an aqueous solution at a pH of 2.0.