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  • Title: Cdc48p is UBX-linked to ER ubiquitin ligases.
    Author: Römisch K.
    Journal: Trends Biochem Sci; 2006 Jan; 31(1):24-5. PubMed ID: 16316751.
    Abstract:
    Proteasome-mediated turnover of misfolded secretory and transmembrane proteins at the cytoplasmic face of the endoplasmic reticulum (ER) membrane is dependent on a AAA-ATPase complex formed by the ubiquitin-selective chaperone Cdc48p in Saccharomyces cerevisiae and mammals by the Cdc48p homologue p97. Two new papers reveal that the Ubx2 protein physically links ER-membrane-integrated ubiquitin ligases to Cdc48p, and that it is essential for degradation of substrates that are ubiquitylated at the cytoplasmic face of the ER.
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