The studies above show that several RBPs localize to peripheral nerve axons and some interact with the localizing motifs in Nrn1's 5′UTR and Hmgb1's 3′UTR at high specificity. We then asked if the endogenous Nrn1 and Hmgb1 mRnas might bind to these axonal RBPs. Antibodies to hnRNP H1...