Immunogen sequence: PKRKMRRRSS CSSEPNTPKS AKCEGDIFTF DRTGTEAEDV LGELEYDKVP YSSLRRTLDQ RRALVMQLFQ DHGFFPSAQA TAAFQARYAD IFPSKVCLQL KIREVRQKIM QA. This gene encodes a core component of the exosome. The mammalian exosome is required for rapid degradation of