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Component of oligomeric Golgi complex subunit 8 (COG8)

Target: COG8
Molecular classification: Other

Overview

Component of oligomeric Golgi complex subunit 8 (COG8) is a key protein subunit of the conserved oligomeric Golgi (COG) complex, an evolutionarily conserved peripheral membrane complex essential for Golgi apparatus function. The COG complex is composed of eight subunits (COG1–COG8) arranged in two lobes. COG8, as part of this complex, plays a critical structural role in glycoprotein and lipid glycosylation, regulation of vesicle-mediated trafficking within the Golgi, protein sorting, and maintenance of Golgi structure. Mutations in COG8 cause congenital disorders of glycosylation, notably CDG-IIh, characterized by severe multisystemic symptoms due to defective glycoprotein processing. COG8 is not an enzyme, receptor, or classic signaling target, but a core component required for normal intracellular membrane traffic and Golgi apparatus homeostasis.

Other names: Conserved oligomeric Golgi complex subunit 8COG complex subunit 8FLJ22315DOR1CDG2HDependent on RIC1COG8

Mechanism of action

Not applicable

Biological functions

Intracellular vesicle tethering and traffickingGolgi apparatus organizationProtein and lipid glycosylation regulationProtein sorting within the GolgiMaintenance of Golgi integrity

Disease associations

Congenital disorder of glycosylation, type IIh (CDG-IIh)Other glycosylation disorders

Safety considerations

Not applicable for therapeutic targeting; however, COG8 dysfunction causes severe congenital disease phenotypes including intellectual disability, failure to thrive, and seizures when mutated

Biomarkers

Deficiency or mutation of COG8

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