PERK Archives - Laboratory Notes https://www.laboratorynotes.com/tag/perk/ Wed, 02 Sep 2026 08:11:09 +0000 en hourly 1 https://wordpress.org/?v=7.1.2 Endoplasmic Reticulum Stress https://www.laboratorynotes.com/endoplasmic-reticulum-stress/ https://www.laboratorynotes.com/endoplasmic-reticulum-stress/#respond Sat, 29 Aug 2026 09:50:51 +0000 https://www.laboratorynotes.com/?p=29999 ER stress arises when misfolded proteins accumulate in the endoplasmic reticulum, overwhelming its folding capacity. Through IRE1, PERK and ATF6 signalling, the unfolded protein response restores proteostasis, reduces protein load and protects cells from stress‑induced damage.

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]]> https://www.laboratorynotes.com/endoplasmic-reticulum-stress/feed/ 0 PERK https://www.laboratorynotes.com/perk/ https://www.laboratorynotes.com/perk/#respond Thu, 27 Aug 2026 00:05:54 +0000 https://www.laboratorynotes.com/?p=30003 PERK is a central ER stress sensor that phosphorylates eIF2α, reduces protein synthesis and activates ATF4‑dependent transcription. Through adaptive and apoptotic signalling, PERK coordinates unfolded protein response pathways that restore proteostasis or eliminate irreparably damaged cells.

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]]> https://www.laboratorynotes.com/perk/feed/ 0 Unfolded Protein Response https://www.laboratorynotes.com/unfolded-protein-response/ https://www.laboratorynotes.com/unfolded-protein-response/#respond Wed, 26 Aug 2026 23:29:46 +0000 https://www.laboratorynotes.com/?p=29995 The unfolded protein response (UPR) is a conserved ER stress pathway that detects misfolded proteins and restores proteostasis. Through IRE1, PERK and ATF6 signalling, cells expand folding capacity, reduce protein load and maintain homeostasis under conditions of ER stress.

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