Immunogen sequence: RGARDRTPPLL YRDRDRDLYP DSDWVPPPPP VRERSTRTAA TSVPAYEPLD SLDRRRDGWS LDRDRGDRDL PSSRDQPRKR RLPEESGGRH LDRSPESDRP RKRHC Highest antigen sequence identity to the following orthologs - mouse 91%, rat 93%. May function as an mRNA export fac