This entry represents a conserved domain found in a number of components of multisubunit tethering complexes. Complexes associated with tethering containing helical rods (CATCHR) include exocyst, COG, GARP, and DSL1 complexes [3], which share a common origin reflected in their structure and organisation similarities. CATCHR share a fold consisting of helical bundles arranged in tandem towards the C-terminal and they usually have a coiled-coil (CC) region at the N-terminal. Each complex has a specialised function at a particular location in the secretory pathway, including vesicle recycling. This domain is found at the N-terminal of Vps51 (also known as Vps67), a subunit of GARP and interacts with the SNARE Tlg1 [1], Exo84/Exo8 from the exocyst and COG1 subunit of the eight-unit Conserved Oligomeric Golgi (COG) complex [2,3].

1: Vps51p links the VFT complex to the SNARE Tlg1p. Siniossoglou S, Pelham HR; J Biol Chem. 2002;277:48318-48324. PMID:12377769

2: Cog1p plays a central role in the organization of the yeast conserved oligomeric Golgi complex. Fotso P, Koryakina Y, Pavliv O, Tsiomenko AB, Lupashin VV; J Biol Chem. 2005;280:27613-27623. PMID:15932880

3: 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