The function of NAV2 (neuron navigator 2, ENSG00000166833) is as follows. Possesses 3' to 5' helicase activity and exonuclease activity (PubMed:12214280, PubMed:15158073). Involved in cytoskeleton organization (PubMed:35218524). Required for neurite outgrowth in response to stimulation by all-trans retinoic acid (atRA) (PubMed:18726912). Involved in neuronal development, specifically in the development of different sensory organs (PubMed:12214280, PubMed:15158073). Important for brain and cerebellar development (PubMed:35218524). Involved in the differentiation, migration and axonal extension of granule cells in the developing cerebellum (By similarity). Involved in the development of the glossopharyngeal cranial nerve IX and the vagus cranial nerve X, possibly by influencing neuronal cell elongation or survival; influencing the efficiency of the baroreceptor reflex response to changes in blood pressure (By similarity). {ECO:0000250|UniProtKB:V9GX91, ECO:0000269|PubMed:12214280, ECO:0000269|PubMed:15158073, ECO:0000269|PubMed:18726912, ECO:0000269|PubMed:35218524}.