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proteostasis
Proteostasis, a portmanteau of the words protein and homeostasis, is the concept that there are competing and integrated biological pathways within cells that control the biogenesis, folding, trafficking and degradation of proteins present within and outside the cell. The concept of proteostasis maintenance is central to understanding the cause of diseases associated with excessive protein misfolding and degradation leading to loss-of-function phenotypes, as well as aggregation-associated degenerative disorders. Therefore, adapting proteostasis should enable the restoration of proteostasis once its loss leads to pathology. Cellular proteostasis is key to ensuring successful development, healthy aging, resistance to environmental stresses, and to minimize homeostasis perturbations by pathogens such as viruses.〔 Mechanisms by which proteostasis is ensured include regulated protein translation, chaperone assisted protein folding and protein degradation pathways. Adjusting each of these mechanisms to the demand for proteins is essential to maintain all cellular functions relying on a correctly folded proteome.
== Mechanisms of proteostasis ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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