Abstract
Maintenance of cellular protein quality - by restoring misfolded proteins to their native state and by targeting terminally misfolded or damaged proteins for degradation - is a critical function of all cells. To ensure protein quality, cells have evolved various organelle-specific quality control mechanisms responsible for recognizing and responding to misfolded proteins at different subcellular locations of the cell. Recently, several publications have begun to elucidate mechanisms of quality control that operate at the plasma membrane (PM), recognizing misfolded PM proteins and targeting their endocytic trafficking and lysosomal degradation. Here, I discuss these recent developments in our understanding of PM quality control mechanisms and how they relate to global protein quality control strategies in the cell.
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