Endoplasmic reticulum stress response protein

The term "endoplasmic reticulum stress response proteins" does not refer to a single molecular target or receptor, but rather to a heterogeneous group of proteins involved in sensing and responding to misfolded proteins within the endoplasmic reticulum (ER)[1][4][7]. Upon accumulation of misfolded/unfolded proteins, the cell activates the *unfolded protein response (UPR)* through specialized ER-resident transmembrane proteins including inositol-requiring enzyme 1α (IRE1α), protein kinase R-like ER kinase (PERK), and activating transcription factor 6 (ATF6)[7][9][5]. These initiate signaling pathways that attenuate global translation, promote the production of molecular chaperones (such as BiP/GRP78), upregulate ER-associated degradation (ERAD) components, and can induce apoptosis if homeostasis cannot be restored[1][4][5][7][9]. UPR components are implicated in multiple diseases, including cancer, neurodegeneration, diabetes, cardiovascular pathology, inflammation, and ocular diseases, due to their central role in cellular proteostasis and cell fate decisions under stress[1][4][6][7]. Individual UPR proteins (e.g., GRP78, CHOP, XBP1) serve as biomarkers and sometimes as direct drug targets, but "ER stress response proteins" as a group does not correspond to a drug target with a single canonical name, accession, or function[1][4][7][9]. **Note:** - "Endoplasmic reticulum stress response proteins" is not a canonical or specific drug target, but refers to a whole family of functionally linked molecules[1][7][9]. - Structured biological or pharmacological databases use precise entities (e.g., "GRP78", "IRE1α", "PERK") as targets, not the umbrella term "ER stress response proteins". - The entry is therefore **not correct** as a target for structured data mapping (see is_incorrect: true).

Other names

ER stress proteinsUPR proteinsunfolded protein response proteinsER chaperones

Inhibition or modulation of unfolded protein response Enhancement of protein folding Attenuation of stress signaling pathways