Provide the one-letter and three-letter abbreviations for amino acids glutamate and serine, and specify the functional group present in each of their side chains.

• A. Glutamate: E, Glu; Side Chain Functional Group: Carboxyl group (-COOH)Serine: S, Ser; Side Chain Functional Group: Hydroxyl group (-OH)
• B. Glutamate: G, Glu; Side Chain Functional Group: Carboxyl group (-COOH)Serine: S, Ser; Side Chain Functional Group: Alkyl group
• C. Glutamate: E, Glu; Side Chain Functional Group: Amine group (-NH₂)Serine: S, Ser; Side Chain Functional Group: Hydroxyl group (-OH)
• D. Glutamate: G, Glu; Side Chain Functional Group: Amine group (-NH₂)Serine: S, Ser; Side Chain Functional Group: Carboxyl group (-COOH)

Answer: (A)