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Review
. 2016 Jul 1;353(6294):aac4354.
doi: 10.1126/science.aac4354.

In vivo aspects of protein folding and quality control

David Balchin  1 , Manajit Hayer-Hartl  1 , F Ulrich Hartl  2
Affiliations
Review

In vivo aspects of protein folding and quality control

David Balchin et al. Science. .

Abstract

Most proteins must fold into unique three-dimensional structures to perform their biological functions. In the crowded cellular environment, newly synthesized proteins are at risk of misfolding and forming toxic aggregate species. To ensure efficient folding, different classes of molecular chaperones receive the nascent protein chain emerging from the ribosome and guide it along a productive folding pathway. Because proteins are structurally dynamic, constant surveillance of the proteome by an integrated network of chaperones and protein degradation machineries is required to maintain protein homeostasis (proteostasis). The capacity of this proteostasis network declines during aging, facilitating neurodegeneration and other chronic diseases associated with protein aggregation. Understanding the proteostasis network holds the promise of identifying targets for pharmacological intervention in these pathologies.

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