Target intelligence / Profile preview

Steroid hormone receptor ERR2 (ERR2)

Target
ERR2
Molecular classification
Nuclear receptor, Steroid hormone receptor, Transcription factor
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Overview

Steroid hormone receptor ERR2 (ESRRB/ERRβ) is a member of the nuclear receptor superfamily of transcription factors. It plays a critical role in stem cell maintenance and developmental processes, including inner ear development and photoreceptor survival. ERR2 functions by binding to specific DNA sequences (ERRE) and regulating the expression of target genes, acting as both an activator and repressor of transcription. While structurally similar to estrogen receptors, it does not bind estrogens and is considered an orphan receptor with poorly defined endogenous ligands. Its function is especially prominent during early developmental stages.

Other names
Estrogen-related receptor betaERRβESRRBNR3B2
02

Mechanism of action

Transcription activation/repression via direct DNA binding to the ERRE motif (5'-TCAAGGTCA-3')

03

Biological functions

Transcription regulationStem cell maintenanceRegulation of gene expressionRegulation of cell differentiationRegulation of cell survival
04

Disease associations

Developmental disordersCancer (potentially, through its role in proliferation and metabolism)Hearing loss (inner ear development)Retinal degeneration
05

Safety considerations

Potential for off-target effects due to structural similarity to other nuclear receptorsModulation of stem cell pluripotency may have unintended developmental consequencesActivation or inhibition of ERR2 in cancer cells could have opposing effects depending on the tumor type

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