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Bioessays. 2016 Sep;38(9):894-902. doi: 10.1002/bies.201600050. Epub 2016 Jul 4.

FK506 binding protein 51 integrates pathways of adaptation: FKBP51 shapes the reactivity to environmental change.

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Department of Translational Science in Psychiatry, Max Planck Institute of Psychiatry, Munich, Germany.


This review portraits FK506 binding protein (FKBP) 51 as "reactivity protein" and collates recent publications to develop the concept of FKBP51 as contributor to different levels of adaptation. Adaptation is a fundamental process that enables unicellular and multicellular organisms to adjust their molecular circuits and structural conditions in reaction to environmental changes threatening their homeostasis. FKBP51 is known as chaperone and co-chaperone of heat shock protein (HSP) 90, thus involved in processes ensuring correct protein folding in response to proteotoxic stress. In mammals, FKBP51 both shapes the stress response and is calibrated by the stress levels through an ultrashort molecular feedback loop. More recently, it has been linked to several intracellular pathways related to the reactivity to drug exposure and stress. Through its role in autophagy and DNA methylation in particular it influences adaptive pathways, possibly also in a transgenerational fashion. Also see the video abstract here.


FKBP5; HPA; adaptation; chaperone; epigenetics; feedback loop; stress

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