The linear sequence of amino acids within a protein is considered the primary structure of the protein. Proteins are built from a set of only twenty amino acids, each of which has a unique side chain.

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 ...

Only very few of these alternative structures ... long linear or fibrillar aggregates known as amyloid deposits. But how can a protein change so radically by folding differently, if the sequence ...

This process, known as condensation or dehydration synthesis, results in the formation of a linear chain of amino acids. The sequence of amino acids in a protein, known as its primary structure, ...