Chemically, an amino acid is a molecule that has a carboxylic acid group and an amine group that are each attached to a carbon atom called the α carbon. Each of the 20 amino acids has a specific ...

Diagram showing the functionalization of a metal oxide nanoparticle with various organic molecules, including trimethoxysilane, amine, phosphonic acid, carboxylic acid, dopamine, and cysteine. This ...

Samples from the asteroid Bennu contain the building blocks of life as we know it. Scientists are enthusiastic.