Retention and retrieval: both mechanisms cooperate to maintain calreticulin in the endoplasmic reticulum.


Many soluble resident proteins of the endoplasmic reticulum share a COOH-terminal Lys-Asp-Glu-Leu (KDEL) sequence. Current opinion favours a model in which these proteins can escape from the endoplasmic reticulum (ER) by bulk flow and are recognized and sorted in the Golgi apparatus by binding to a specific KDEL-receptor, which returns them to the ER… (More)

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