Conserved oligomeric Golgi complex subunit 3 is a protein that in humans is encoded by the COG3 gene. [5] [6]
The protein encoded by this gene has similarity to a yeast protein. It seems to be part of a peripheral membrane protein complex localized on cis/medial Golgi cisternae where it may participate in tethering intra-Golgi transport vesicles. [6]