Predicted to enable RNA binding activity; histone-glutamine methyltransferase activity; and rRNA methyltransferase activity. Predicted to be involved in box C/D RNA 3'-end processing; histone glutamine methylation; and rRNA methylation. Located in Cajal body and nucleolus. Is expressed in several structures, including embryonic/larval midgut; embryonic/larval muscle cell; extended germ band embryo; gonad; and visceral muscle primordium. Orthologous to several human genes including FBL (fibrillarin). [provided by Alliance of Genome Resources, Apr 2022]