O-mannosylation protects mutant alpha-factor precursor from endoplasmic reticulum-associated degradation

Secretory proteins that fail to fold in the endoplasmic reticulum (ER) are transported back to the cytosol and degraded by proteasomes. It remains unclear how the cell distinguishes between folding intermediates and misfolded proteins. We asked whether misfolded secretory proteins are covalently mod...

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