![A) Alanine synthesis using a Strecker mechanism, where the wiggly bonds indicate indeterminate stereochemistry. (B) Illustrating a calcium-promoted step on the reaction pathway where a PNC effect from Ca2+ could influence chiral preference at the Cα carbon (highlighted by circling in dashed blue). (C) An example of an Ala-bound calcium complex in a metal-mediated autocatalytic pathway, where L and L′ could be water, a bifurcating carboxylate from another amino acid [5], or other ligands. -- Life](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/01/Influence-of-the.png?resize=1200%2C900&ssl=1)
Natural chiral amino acids typically adopt an L structural configuration. While a preference for specific molecular chiralities is observed throughout biology and cellular chemistry, the origins of this preference are […]
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