The function of RIC1 (RIC1 partner of RAB6A GEF complex, Ensembl gene identifier ENSG00000107036) is as follows. The RIC1-RGP1 complex acts as a guanine nucleotide exchange factor (GEF), which activates RAB6A by exchanging bound GDP for free GTP, and may thereby be required for efficient fusion of endosome- derived vesicles with the Golgi compartment (PubMed:23091056). The RIC1-RGP1 complex participates in the recycling of mannose-6-phosphate receptors (PubMed:23091056). Required for phosphorylation and localization of GJA1 (PubMed:16112082). Is a regulator of procollagen transport and secretion, and is required for correct cartilage morphogenesis and development of the craniofacial skeleton (PubMed:31932796). {ECO:0000269|PubMed:16112082, ECO:0000269|PubMed:23091056, ECO:0000269|PubMed:31932796}.