>tr|Q86WJ0|Q86WJ0_HUMAN Neuregulin 1 isoform 4 (Fragment) OS=Homo sapiens OX=9606 GN=NRG1 PE=2 SV=1 CVNGGECFMVKDLSNPSRYLCKCQPGFTGARCTENVPMKVQNQESAQMSLLVIAAKTT