Predicted to enable guanyl-nucleotide exchange factor activity and small GTPase binding activity. Predicted to be involved in negative regulation of cellular protein catabolic process; positive regulation of GTPase activity; and retrograde transport, endosome to Golgi. Predicted to be located in cytosol and plasma membrane. Predicted to be part of Ric1-Rgp1 guanyl-nucleotide exchange factor complex. Predicted to be active in Golgi membrane. Is expressed in several structures, including alimentary system; brain; cardiovascular system; genitourinary system; and immune system. Orthologous to human RGP1 (RGP1 homolog, RAB6A GEF complex partner 1). [provided by Alliance of Genome Resources, Apr 2022]