COG7

COG7 is a subunit of the conserved oligomeric Golgi (COG) complex in Toxoplasma gondii tachyzoites, where the complex is essential for Golgi-mediated protein transport (PMID:37966241). Characterization of the COG complex in this parasite, which includes COG7, additionally identified novel COG-interacting partners critical for trafficking, indicating that T. gondii has broadened the roles of conserved COG elements to meet parasite-specific trafficking needs (PMID:37966241). Beyond this identification and functional requirement in protein transport, no further mechanistic detail specific to COG7 has been characterized in the available corpus.

1. 2023 Medium

   Whether a conserved oligomeric Golgi complex exists and functions in an apicomplexan parasite was unresolved; identifying COG7 as part of an essential COG complex established that Golgi-mediated protein transport in T. gondii depends on this machinery and involves parasite-specific partners.

   Evidence Genetic characterization and loss-of-function functional studies with protein-transport phenotypic readouts in T. gondii tachyzoites

   PMID:37966241

   Open questions at the time

   • No orthogonal method specific to COG7 alone (e.g. its individual contribution versus the intact complex) is reported
   • The identity and molecular action of the novel COG partners are not detailed at the level of COG7
   • No structural, biochemical, or subcellular localization data for COG7 are provided