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Building blocks of life

Growing the seeds of homochirality

Shining circularly polarized light into a suspension of racemic amino-acid-derivative crystals in a saturated solution and then grinding them results in enantiomerically pure crystals. This evolution is shown to be directed by an unknown chiral product.

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Figure 1: A symmetry-breaking event.
Figure 2: Evolution of homochirality in an amino-acid derivative directed by an unknown chiral photoproduct.

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Fletcher, S. Growing the seeds of homochirality. Nature Chem 1, 692–693 (2009). https://doi.org/10.1038/nchem.455

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