Tumor necrosis factor receptor-associated protein 1 (TRAP1) (TRAP1)

TRAP1 is a mitochondrial molecular chaperone of the HSP90 family, distinct from cytosolic HSP90 variants. It facilitates ATP-dependent folding and protection of nascent and stress-damaged proteins within mitochondria, modulates cellular metabolism (balancing oxidative phosphorylation and glycolysis), and protects against apoptosis by regulating oxidative stress and mitochondrial permeability. TRAP1 is upregulated in multiple cancer types, where it supports metabolic adaptation, drug resistance, and tumor progression; it is downregulated in neurodegenerative diseases like Alzheimer's and Parkinson's disease, where loss of mitochondrial protection may contribute to pathogenesis. Drugs targeting TRAP1 are in development, aimed at selectively impairing tumor metabolism without broadly harming normal tissue, though therapeutic windows and safety remain active areas of research. If focusing on cytosolic HSP90, the canonical name would be Heat shock protein 90 alpha (HSP90AA1) or beta (HSP90AB1), but "HSP90/TRAP1" most often means the mitochondrial TRAP1 variant. If greater specificity is needed for structured queries, split entries for HSP90 (cytosolic) and TRAP1 (mitochondrial) can be provided.

Other names

TRAP1TNF receptor-associated protein 1HSP75Heat shock protein 90 kDa family member TRAP1Mitochondrial Hsp90

Inhibition of TRAP1's ATPase chaperone activity disrupts protein folding, quality control, and metabolic adaptation—causing cancer cell apoptosis and chemosensitization. Modulation of mitochondrial homeostasis and stress responses. Selective antagonism of TRAP1 can induce oxidative stress or apoptosis in diseased cells.