Both of these amino acids are non-polar and aliphatic and have a four-carbon side chain emerging from the basic amino acid structure. The skeletal structure of leucine is shown below.

Amino acids have a basic backbone made of an amino group and a carboxyl group, and differ in their side-chains. Skip to content. Menu. ... which come together to form a 3D structure.

An amino acid, one of the building blocks of life, has been spotted in deep space. If the find stands up to scrutiny, it means that the sorts of chemistry needed to create life are not unique to ...