A structural view of the COPII vesicle coat
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Updated: Aug 24, 2026

In Vitro Reconstitution of the Actin Cytoskeleton Inside Giant Unilamellar Vesicles
Published on: August 25, 2022
Lincoln C Bickford1, Elena Mossessova, Jonathan Goldberg
1Howard Hughes Medical Institute and the Structural Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10021, USA.
Abstract:
The COPII vesicle coat coordinates the budding of transport vesicles from the endoplasmic reticulum in the initial step of the secretory pathway. The coat orchestrates a sequence of events including self-assembly on the membrane, cargo and SNARE molecule selection, and deformation of the membrane into a bud to drive vesicle fission. Recent molecular-level studies have helped to explain how the three components of yeast COPII - Sar1 GTPase, the Sec23/24 subcomplex and the Sec13/31 subcomplex - combine to organize this complex process.
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