Immunogen sequence: LEVRSSWSFA GVPGAQRLWM AEAQSGTGQL QEQKKGLLIA VSVSVDKIIS HFGAARNLVQ KAQLGDSRLS PDVG Highest antigen sequence identity to the following orthologs: Mouse - 96%, Rat - 96%. RUSC1, also known as NESCA, shares with the related protein RUSC2