Tokyo: Protein synthesis in eukaryotic cells--found in plants, animals, and fungi--involves more than just the straightforward ribosome assembly of amino acids.
During or shortly after their synthesis, over one-third of all human proteins need to be delivered to the endoplasmic reticulum (ER). These proteins' structure and function depend on the critical folding and changes that take place in the ER, such as the creation of disulphide (S-S) bonds.
