Oxidation resistance protein 1 (OXR1)

Oxidation resistance protein 1 (OXR1) is a conserved antioxidant protein crucial for cellular defense against oxidative stress, particularly within the nervous system. OXR1 acts as a regulator of oxidative stress resistance by activating multiple protective responses including DNA repair, cell cycle arrest during oxidative damage, suppression of apoptosis, and detoxification of reactive oxygen species. It interacts with protein methyl transferase 5 (PRMT5) to modulate chromatin structure via histone methylation, impacting transcription of genes that increase oxidative stress resistance and cell viability. OXR1 is found in the cytoplasm and associated with mitochondria—especially its isoforms—where it influences mitochondrial morphology, further contributing to cell survival. Loss of OXR1 increases vulnerability to neurodegeneration and oxidative damage, while overexpression confers neuroprotection in both cellular and animal models. No approved drugs directly target OXR1, though its role makes it a candidate for antioxidant therapy development in diseases such as ALS, ataxia, and other oxidative stress-related neuropathologies.

Other names

OXR1Oxidation resistance 1TLDC3 (TBC/LysM-associated domain containing 3)Nbla00307CHEGDDPutative protein product of Nbla00307TBC/LysM-associated domain containing 3Oxidation resistance protein 1

Not directly applicable as no approved drugs are known; however, approaches would likely aim to upregulate OXR1, enhance its antioxidant activity, or modulate associated pathways (e.g., PRMT5 interaction for histone methylation and subsequent gene regulation)