COG2 encodes a subunit of the conserved oligomeric Golgi complex that is required for maintaining normal structure and activity of the Golgi complex. The encoded protein specifically interacts with the USO1 vesicle docking protein and may be necessary for normal Golgi ribbon formation and trafficking of Golgi enzymes.Synonyms: COG complex subunit 2, Component of oligomeric Golgi complex 2, Conserved oligomeric Golgi complex subunit 2, LDLC, Low density lipoprotein receptor defect C-complementing protein