Protein targeting or protein sorting is the biological mechanism by which proteins are transported to their appropriate destinations within or outside the cell.[1][2][note 1] Proteins can be targeted to the inner space of an organelle, different intracellular membranes, the plasma membrane, or to the exterior of the cell via secretion.[1][2] Information contained in the protein itself directs this delivery process.[2][3] Correct sorting is crucial for the cell; errors or dysfunction in sorting have been linked to multiple diseases.[2][4][5]
^Guo Y, Sirkis DW, Schekman R (2014-10-11). "Protein sorting at the trans-Golgi network". Annual Review of Cell and Developmental Biology. 30 (1): 169–206. doi:10.1146/annurev-cellbio-100913-013012. PMID25150009.
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