Ribosomal protein turnover under normal condition

The cytosolic ribosome is composed of a large number of distinct protein types and its overall function is responsible for the synthesis of most proteins in plants. Defining the role of each of its protein subunits is a major challenge which is hampered by a lack of consistency in current attribution of proteins to the cytosolic ribosome or to the broader translatome associated with functioning ribosomes. The turover rates of several ribosomal proteins, including both small and large subunit proteins were measured, which showed that shows that some ribosomal proteins turnover much more rapidly that the ribosome as a whole and could be important to understand ribosome function, critical sites in their function or in vivo repair processes.