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Since the first therapeutic application of a r-protein produced in mammalian cells was approved in 1986. (human tissue plasminogen activator, tPA, Genentech), biopharmaceuticals have changed the. landscape for the treatment of many diseases, including many types of cancer, rheumatic conditions. and orphan diseases.
Best Answer: Protein synthesis (and therefore enzyme synthesis) occurs at the ribosome, and the presence of ribosomes on the ER is what makes it the ROUGH endoplasmic reticulum. The rough endoplasmic reticulum would be the part producing the protein enzymes.