Predicted to enable GTPase activity. Involved in dorsal/ventral neural tube patterning. Acts upstream of or within several processes, including embryonic morphogenesis; regulation of smoothened signaling pathway; and spinal cord dorsal/ventral patterning. Located in endosome membrane and plasma membrane. Is expressed in several structures, including alimentary system; cardiovascular system; central nervous system; embryo mesenchyme; and genitourinary system. Human ortholog(s) of this gene implicated in Carpenter syndrome. Orthologous to human RAB23 (RAB23, member RAS oncogene family). [provided by Alliance of Genome Resources, Apr 2022]