Immunogen sequence: HHSSSSTPLA ADKESQGEKA ADTTPRKKQN SNSQSTPGSS GQRKRKVQLL PSRRG. POM121 (POM121 membrane glycoprotein), also known as POM121A (nuclear envelope pore membrane protein POM 121A), NUP121 (nucleoporin Nup121) or pore membrane protein of 121