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GRP75-dependent SIMPA mediates inter-organellar quality control

GRP75-dependent SIMPA mediates inter-organellar quality control

Feed excerpt — reported by Nature

Nature, Published online: 21 October 2026; doi:10.1038/s41586-026-10733-yProteotoxic stress drives formation of GRP75-dependent protein aggregates that signal through mitochondria–ER contact sites to activate targeted quality-control pathways, enabling selective clearance of damaged proteins and preserving mitochondrial integrity.

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