Immunogen sequence: VGINAIKEIT ARCPLAMTEE LLQDLAQYKT HKDKNVMMSA RTLIHLFRTL NPQMLQKKFR GKPTEASIEA RVQEYGEL Highest antigen sequence identity to the following orthologs: Mouse - 99%, Rat - 99%. Required for 60S pre-ribosomal subunits export to the cytoplas