Why did life on Earth choose alpha amino acids as the building blocks of proteins? A new study suggests the answer lies in the stability of their inter-molecular interactions. Researchers found that primitive peptide-like molecules made from alpha backbones formed more durable, compartment-like structures than their longer beta counterparts, giving them a potential evolutionary advantage. The findings propose an assembly-driven model for the origins of life, offering fresh insight into how chemistry shaped biology.

In an article published in Communications Physics, researchers from the Université libre de Bruxelles and the Institute for Quantum Optics and Quantum Information in Vienna present a new framework for describing physics relative to quantum reference frames, unveiling the importance of previously unrecognised “extra particles”.