Glycotripeptides are released by yeast but not by mammalian microsomes.

Abstract

Glycotripeptides generated in vivo in the endoplasmic reticulum (ER) have been used as markers to assess the rate of vesicular bulk flow from the ER via the Golgi apparatus to the plasma membrane in mammalian cells. The applicability of such glycotripeptides as markers for bulk flow along this pathway has been questioned by a report on non-vesicular release… (More)

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