COG6

COG6 is a subunit of the conserved oligomeric Golgi (COG) complex in Toxoplasma gondii tachyzoites, where the complex is essential for protein transport (PMID:37966241). In T. gondii, the COG complex has broadened the role of its conserved elements and acquired novel interacting partners, apparently compensating for missing trafficking machinery components (PMID:37966241). Beyond this complex-level characterization (PMID:37966241), no further mechanistic detail specific to COG6 has been characterized in the available corpus.

1. 2023 Medium

   Whether an apicomplexan parasite retains a functional COG complex and what role it plays was unknown; identifying the COG complex including COG6 in T. gondii and showing it is essential for protein transport established that this conserved Golgi machinery operates in tachyzoites and has been adapted with novel partners.

   Evidence Genetic characterization and functional analysis of the COG complex in T. gondii tachyzoites, including identification of components and novel partners and assessment of essentiality for protein transport

   PMID:37966241

   Open questions at the time

   • The specific molecular activity and direct binding partners of COG6 individually within the complex are not defined
   • The identity and mechanism of the novel COG partners are not detailed
   • The precise cargo and glycosylation defects resulting from COG6 loss are not resolved