Enables enzyme binding activity. Involved in negative regulation of signal transduction; regulation of transcription, DNA-templated; and signal transduction. Located in nucleus. Human ortholog(s) of this gene implicated in Silver-Russell syndrome; leiomyoma; lipoma; and ovarian cancer. Orthologous to human HMGA2 (high mobility group AT-hook 2). [provided by Alliance of Genome Resources, Apr 2022]