Predicted to enable DNA binding activity. Predicted to be involved in regulation of gene expression. Predicted to act upstream of or within negative regulation of protein sumoylation; positive regulation of neuron differentiation; and skeletal muscle cell differentiation. Predicted to be located in nuclear body. Predicted to be active in nucleus. Orthologous to human HMG20B (high mobility group 20B). [provided by Alliance of Genome Resources, Apr 2022]