While virtually all naturally occurring biologically relevant -amino acids are fundamentally optically active, which single specific native amino acid is strictly achiral due to the lack of an asymmet

Question

While virtually all naturally occurring biologically relevant $\alpha$ -amino acids are fundamentally optically active, which single specific native amino acid is strictly achiral due to the lack of an asymmetric $\alpha$ -carbon?

Prashant Kotian · Accepted Answer

Correct answer: D. Glycine () is the absolute simplest -amino acid. Because its -carbon is bound sequentially to two identical, indistinguishable hydrogen atoms, it completely lacks a stereocenter and cannot exhibit optical isomerism.

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