# Amino Acid Chiral Selection Via Weak Interactions in Stellar Environments: Implications for the Origin of Life

## TL;DR

This paper investigates how weak magnetochiral interactions in stellar environments could have led to the chiral selection of amino acids, providing insights into the origin of life's molecular asymmetry.

## Contribution

It presents quantum chemistry calculations of enantiomeric excesses for amino acids, including meteorite-related compounds, considering both isolated and aqueous states, expanding previous models.

## Key findings

- Amino acids can develop enantiomeric excesses up to a few percent.
- Aqueous environments may enhance chiral selection effects.
- Results support magnetochiral phenomena as a factor in life's molecular asymmetry.

## Abstract

Magnetochiral phenomena may be responsible for the selection of chiral states of biomolecules in meteoric environments. For example, the Supernova Amino Acid Processing (SNAAP) Model was proposed previously as a possible mode of magnetochiral selection of amino acids by way of the weak interaction in strong magnetic fields. In earlier work, this model was shown to produce an enantiomeric excess (ee) as high as 0.014% for alanine. In this paper we present the results of molecular quantum chemistry calculations from which $ee$s are determined for the alpha-amino acids plus isovaline and norvaline, which were found to have positive ees in meteorites. Calculations are performed for both isolated and aqueous states. In some cases, the aqueous state was found to produce larger $ee$s reaching values as high as a few percent under plausible conditions.