May play an important role in neural organelle transport, and in transduction of nerve signals or in nerve growth. May play a role in neurite extension. May play a role in memory consolidation (By similarity). {ECO:0000250|UniProtKB:P97799, ECO:0000269|PubMed:12463420}. This is the function of ENSG00000152954 (NRSN1, neurensin 1).