This entry represents the C-terminal domain of Cog5, a component of the conserved oligomeric Golgi (COG) complex which is involved in intra-Golgi protein trafficking and consists of eight subunits arranged in two lobes bridged by Cog1 [1,2]. Cog5 is a member of the complexes associated with tethering containing helical rods (CATCHR) fold family, which is homologous to subunits of other multisubunit tethering complexes (MTCs) such as Dsl1, exocyst and Golgi-associated retrograde protein (GARP) complexes [1,2]. COG5 is located in the smaller B lobe together with subunits 6-8, and interacts with subunits 1 and 7. This domain represents the alpha-helical bundle found at the C-terminal of COG5.

1: Cog5-Cog7 crystal structure reveals interactions essential for the function of a multisubunit tethering complex. Ha JY, Pokrovskaya ID, Climer LK, Shimamura GR, Kudlyk T, Jeffrey PD, Lupashin VV, Hughson FM; Proc Natl Acad Sci U S A. 2014;111:15762-15767. PMID:25331899

2: Homology and Modular Evolution of CATCHR at the Origin of the Eukaryotic Endomembrane System. Santana-Molina C, Gutierrez F, Devos DP; Genome Biol Evol. 2021; [Epub ahead of print] PMID:34061181