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The ERRs are orphan nuclear receptors, meaning the identity of their endogenous ligand has yet to be unambiguously determined. They are named because of sequence homology with estrogen receptors, but do not appear to bind estrogens or other tested steroid hormones. There are three human estrogen related receptors: * ERRα () * ERRβ () * ERRγ () ERRs bind to estrogen response elements and modulate transcription but are not activated by estrogens. They also have their own response elements: ERREs. ERRs have been associated with energy homeostasis, diabetes and cancer. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Estrogen-related receptor」の詳細全文を読む スポンサード リンク
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