Estrogen Receptor 1 (ESR1/ERα) is a nuclear receptor protein encoded by the ESR1 gene on chromosome 6q25.1. As the primary estrogen receptor in the brain, ESR1 plays critical roles in neuroprotection, synaptic plasticity, and cognitive function. The 595-amino acid protein is a ligand-activated transcription factor that mediates the genomic effects of estrogen, but also participates in rapid signaling events independent of gene transcription. Estrogen has been extensively studied for its neuroprotective effects in Alzheimer's disease and Parkinson's disease.
The receptor is expressed throughout the brain, with particularly high levels in the [hippocampus](/brain-regions/hippocampus), [cortex](/brain-regions/cortex), and hypothalamus. Its neuroprotective effects are mediated through multiple mechanisms including antioxidant activity, anti-inflammatory signaling, mitochondrial protection, and modulation of amyloid metabolism. This makes ESR1 an important protein in understanding sex-based differences in neurodegenerative disease risk.[@behl2002]
Estrogen Receptor 1 (ESR1/ERα) is a nuclear receptor protein encoded by the ESR1 gene on chromosome 6q25.1. As the primary estrogen receptor in the brain, ESR1 plays critical roles in neuroprotection, synaptic plasticity, and cognitive function. The 595-amino acid protein is a ligand-activated transcription factor that mediates the genomic effects of estrogen, but also participates in rapid signaling events independent of gene transcription. Estrogen has been extensively studied for its neuroprotective effects in Alzheimer's disease and Parkinson's disease.
The receptor is expressed throughout the brain, with particularly high levels in the [hippocampus](/brain-regions/hippocampus), [cortex](/brain-regions/cortex), and hypothalamus. Its neuroprotective effects are mediated through multiple mechanisms including antioxidant activity, anti-inflammatory signaling, mitochondrial protection, and modulation of amyloid metabolism. This makes ESR1 an important protein in understanding sex-based differences in neurodegenerative disease risk.[@behl2002]
Protein Name: ESR1 - Estrogen Receptor 1 (ERα)
UniProt ID: P03372
Gene: [ESR1](/genes/esr1)
Molecular Weight: ~66 kDa (595 amino acids)
Protein Class: Nuclear receptor, Transcription factor
Tissue Expression: Brain (hippocampus, cortex), reproductive tissues, bone