The main function of the Golgi apparatus is to process and package macromolecules, such as proteins and lipids. They come to the Golgi after being built, and before they go to their destination. Much of the enzymatic processing is post-translational modification of proteins. The Golgi complex inspects them for flaws and discards extra material added during their manufacture, wraps them up and then targets them for packaging. The Golgi complex is especially active in processing proteins for secretion. The Golgi releases special enzymes called lysosomes, which clean off any extra amino acids. When the package is ready, it is pinched off the Golgi and released into the cytoplasm. 