Primary structure of protein: Proteins are made up of amino acids

Proteins are made up of amino acids which undergo various stages of folding to form their shape and structure. Depending on the structure of the protein they will have different functions within the body, including structural, regulatory, contractile and protective roles. In this article, we will discuss the structure and function of proteins, and consider their clinical relevance. To reiterate, the primary structure of a protein is defined as the sequence of amino acids linked together to form a polypeptide chain. Each amino acid is linked to the next amino acid through peptide bonds created during the protein biosynthesis. To understand how a protein gets its final shape or conformation, we need to understand the four levels of protein structure: primary, secondary, tertiary, and quaternary. The simplest level of protein structure, primary structure, is simply the sequence of amino acids in a polypeptide chain. Learn about the primary structure of proteins, which is the sequence of amino acids in a polypeptide chain. Also, explore the secondary, tertiary and quaternary structures of proteins and their formation and examples.