The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl group, a hydrogen atom ...

Proteins have four levels of structure: primary (amino acid sequence), secondary (local folding patterns like alpha helices and beta sheets), tertiary (overall 3D shape), and quaternary (assembly of ...

Proteins are made-up of strings of amino acid molecules, which then form complex sequences. These sequences help read, copy and repair DNA. DNA, or deoxyribonucleic acid, is a molecule that ...