Enables poly(G) binding activity; promoter-specific chromatin binding activity; and ribonucleoprotein complex binding activity. Involved in cellular response to dexamethasone stimulus; positive regulation of DNA topoisomerase (ATP-hydrolyzing) activity; and positive regulation of gene expression. Located in nucleus. Part of ribonucleoprotein complex. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 54. Orthologous to human HNRNPU (heterogeneous nuclear ribonucleoprotein U). [provided by Alliance of Genome Resources, Apr 2022]