Protein Organization and Folding Levels

Protein organization describes how a protein is arranged at several levels. These levels help explain how a chain of amino acids becomes a working molecule. The main stages are primary, secondary, tertiary, and quaternary structure.

Primary structure is the linear order of amino acids in the prot...

When amnio acids emerge from the ribosome during translation they form the first primary protein structure, a chained sequence that can vary in length. This peptide chain is held together by covalent bonds between the amine and carboxyl ends of two amnio acids.

As the peptide lengthens hydrogen bonds form, some amino acids bond to neighb...