Abstract:
:The endoplasmic reticulum (ER) is an intracellular compartment devoted to the synthesis, segregation and folding of soluble and membrane secretory proteins. Some mutations in these proteins lead to their incorrect or incomplete folding in the ER. The ER has a quality control system which detects misfolded proteins and then specifies their fate. Some mutated proteins are retained in the ER wherein they accumulate (Russell bodies for misfolded immunoglobulin heavy chains, the PiZZ for alpha 1-antitrypsin), others are retrotranslocated from the ER and degraded by the cytosolic proteasomal system, and yet other proteins are eventually secreted (in AZC-treated cells). In this review we summarize the role of ER resident proteins in quality control of mutated secretory proteins.
journal_name
Semin Cell Dev Bioljournal_title
Seminars in cell & developmental biologyauthors
Chevet E,Jakob CA,Thomas DY,Bergeron JJdoi
10.1006/scdb.1999.0316subject
Has Abstractpub_date
1999-10-01 00:00:00pages
473-80issue
5eissn
1084-9521issn
1096-3634pii
S1084-9521(99)90316-6journal_volume
10pub_type
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