Enables mRNA 3'-UTR binding activity. Acts upstream of or within RNA splicing. Predicted to be located in cytoplasm and nucleoplasm. Predicted to be active in nucleus. Is expressed in several structures, including central nervous system; hemolymphoid system gland; pancreas epithelium; sensory organ; and urinary system. Human ortholog(s) of this gene implicated in chondrosarcoma and extraskeletal myxoid chondrosarcoma. Orthologous to human TAF15 (TATA-box binding protein associated factor 15). [provided by Alliance of Genome Resources, Apr 2022]