Conserved oligomeric Golgi complex subunit 6 (COG6)

Conserved oligomeric Golgi complex subunit 6 (COG6) is one of eight essential protein components of the COG complex, a cytosolic vesicular tethering complex that is critical for maintaining normal Golgi apparatus morphology and the proper trafficking of proteins through the Golgi compartment[3][4][5][7]. COG6 is required for the tethering and fusion of vesicles, especially those involved in retrograde trafficking, enabling the correct localization of glycosylation enzymes and other resident Golgi proteins[1][2][5]. Loss of function or mutations in COG6 disrupt both N- and O-linked glycosylation of proteins, mislocalize Golgi enzymes, cause fragmentation of the Golgi, and lead to a rare inherited disease known as COG6-congenital disorder of glycosylation (COG6-CDG or CDG2L), characterized by developmental delay, growth abnormalities, and multisystem symptoms[1][2][4][5]. COG6 also directly interacts with a subset of Golgi SNARE proteins (such as STX5, STX6, GS27, and SNAP29), which are essential for vesicular docking and fusion events within the Golgi[2]. To date, there are no known therapeutic drugs that directly target COG6, and no evidence it serves as a direct therapeutic target.

Other names

Component of oligomeric Golgi complex 6COG complex subunit 6KIAA1134COD2CDG2LSHNScomplexed with Dor1p 2conserved oligomeric Golgi complex protein 6testicular tissue protein Li 41