Contactin-3/CNTN3 protein mediates crucial cell surface interactions in nervous system development and promotes neurite outgrowth. It interacts with PTPRG, indicating its involvement in signaling mechanisms that regulate neuronal growth and connectivity. Contactin-3/CNTN3 Protein, Rat (HEK293, His) is the recombinant rat-derived Contactin-3/CNTN3 protein, expressed by HEK293 , with C-His labeled tag.