Cellular protein transport. Illustration of the processes involved in the transport of proteins within a cell. This depiction shows both unselected and signal-mediated transport. Proteins (yellow dots) are produced on the endoplasmic reticulum (top left), transported to the cis face of the Gogli apparatus (centre left) and released from the trans face. Uncoated vesicles (lower centre) transport the proteins and release them (endocytosis) at the plasma membrane in unselected transport (lower right). Clathrin-coated endosomes (red, upper right) are a form of signal-mediated transport. For this artwork without labels, see image C023/8746.
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