25.1Introduction Figure 25.1 Proteins that enter the endoplasmic reticulum are Secreted proteins membrane transported to the golgi and towards the plasma membrane Gotai transact prote ins to plasma membrane Specific signals cause proteins trans Golgi t to be returned from the golgi ns occur to the eR, to be retained in the rom ch fo tai ns bosom es Golgi, to be retained in the plasma membrane or to be ransport to golgi prot eins retum to transported to endosomes and Proteins enter E uring synthesi transported between the plasma/oawvrg oiyrcosyation lysosomes. Proteins may be Endoplasmic reticulum385> membrane and endosomes 消当Figure 25.1 Proteins that enter the endoplasmic reticulum are transported to the Golgi and towards the plasma membrane. Specific signals cause proteins to be returned from the Golgi to the ER, to be retained in the Golgi, to be retained in the plasma membrane, or to be transported to endosomes and lysosomes. Proteins may be transported between the plasma membrane and endosomes. 25.1 Introduction