Might play a role in viral replication since it is associated with viral replication centers. Seems to have an effect on DBP localization. At 18 to 24 hours postinfection, UXP is strongly associated with nucleoli and is found throughout the nucleus. Later, UXP is associated with the periphery of replication centers. Expressed abundantly in the late phase of the viral replicative cycle. Belongs to the adenoviridae U exon protein family.