Authors
Tatiana Soldà, Silvia Olivari, Maurizio Molinari
Summary
Efficient protein folding and quality control are essential for unperturbed cell viability. Defects in these processes may lead to production of aberrant polypeptides that are either degraded leading to “loss-of-function” phenotypes, or deposited in or outside cells leading to “gain-of-toxic-function” phenotypes. Elucidation of molecular mechanisms regulating folding and quality control of newly synthesized polypeptides is therefore of greatest interest. Here we describe protocols for metabolic labelling of transfected/infected mammalian cells with [35S]-methionine and [35S]-cysteine, for immunoisolation from detergent extracts of the selected model proteins and for the investigation of the model polypeptide’s intracellular fate in response to chaperone-deletions or to cell exposure to folding or degradation inhibitors.Further details
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