Immunogen sequence: HEDSGDSEVE NEAKGNFPPQ KKPVWVDEED EDEEMVDMMN NRFRKDMMKN ASESKLSKDN LKKRLKEEFQ HAMGGVPAWA ETTKRKT Highest antigen sequence identity to the following orthologs: Mouse - 76%, Rat - 81%. UTP18 is involved in nucleolar processing of pre-18S