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 ...

That is, until now. In a new study published in Nature, University of Missouri researchers have, for the first time, revealed ...

Why is knowing the atomic structure of molecules useful? Learn why, and how information like this about protein structure is shared through a publicly available database. Scientists use a variety ...

Proteins are the workhorses that keep our cells running, and there are many thousands of types of proteins in our cells, each performing a specialized function. Researchers have long known that the ...

Introduction Definition of Peptides Peptides are short chains of amino acids linked by peptide bonds, typically consisting of 2 to ...

The sequence of amino acids in the chain determines how the chain will fold up to make the protein, so different proteins have different three-dimensional shapes. The three-dimensional shape of a ...