Vesicle tethering is the least well understood step of vesicular transport. The core conserved oligomeric Golgi (COG) vesicle tethering complex from yeast, consisting of the four essential subunits Cog1–4, is now reconstituted and characterized by negative stain EM and single particle analysis. The COG complex forms a y-shaped structure, whose central region and the distal regions of at least two legs all participate in interactions with other components of the intracellular trafficking machinery.
- Joshua A Lees
- Calvin K Yip
- Frederick M Hughson