Enables small GTPase binding activity. Involved in several processes, including Golgi to endosome transport; endoderm development; and fibroblast growth factor receptor signaling pathway. Acts upstream of or within cellular response to interferon-gamma. Located in phagocytic vesicle. Orthologous to human KIF16B (kinesin family member 16B). [provided by Alliance of Genome Resources, Apr 2022]