Members of this family of proteins are involved in maintaining Golgi structure. They stimulate the formation of Golgi stacks and ribbons, and are involved in intra-Golgi retrograde transport. Two main interactions have been characterised: one with RAB1A that has been activated by GTP-binding and another with isoform CASP of CUTL1 [1].

1: Golgin-84 is a rab1 binding partner involved in Golgi structure. Satoh A, Wang Y, Malsam J, Beard MB, Warren G; Traffic. 2003;4:153-161. PMID:12656988