Predicted to enable G-quadruplex RNA binding activity. Predicted to be involved in regulation of RNA splicing. Predicted to act upstream of or within learning or memory; negative regulation of gene expression; and nuclear speck organization. Predicted to be located in nucleus. Predicted to be active in nuclear speck. Human ortholog(s) of this gene implicated in X-linked intellectual developmental disorder 109. Orthologous to human AFF2 (AF4/FMR2 family member 2). [provided by Alliance of Genome Resources, Apr 2022]