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Normal view

GRP75-dependent SIMPA mediates inter-organellar quality control

Nature, Published online: 21 October 2026; doi:10.1038/s41586-026-10733-y

Proteotoxic 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.

CRISPR–Cas regulates expression of embedded anti-phage defence systems

Nature, Published online: 22 July 2026; doi:10.1038/s41586-026-10833-9

CRISPR–Cas systems transcriptionally tune diverse innate defences using CRISPR RNA-like guides to balance antiviral protection with fitness, and hyperactivate these defences when compromised, establishing a layered bacterial ‘immunity guard’ network.
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