Discovery of a component of the chloroplast-associated protein degradation system

Regulation of chloroplast protein import by chloroplast-associated protein degradation (CHLORAD) is crucial for chloroplast biogenesis and plant development. This study identifies PUX10 as a CHLORAD component that functions as a membrane-bound scaffold to recruit cytosolic Cdc48 to the chloroplast surface and bring it into proximity with CHLORAD substrates.