Proteins are biopolymers of amino acids (polypeptides), joined by peptide bonds, that are generated by ribosomes. The amino acid sequence, encoded by its gene, determines a protein’s structure and function. Newly synthesized proteins can be modified by post-translational modification, altering its protein folding, stability and activity. Proteins often associate into protein–protein interaction networks for function.
News and Views |Nature Structural and Molecular Biology 24, 500–502