Immunogen sequence: QPAKQNGKKA TSKVPSAPHF VHPNDHANRE AELKKKWVEE MREKQQAARE QERQKRRTIE SYCQDVLRRQ EEFEHKEEVL QELN. The protein encoded by this gene appears to be a nucleolar GTPase that is essential for ribosomal pre-rRNA processing and cell proliferation