Predicted to enable RNA binding activity. Acts upstream of or within regulation of transcription by RNA polymerase II and spinal cord motor neuron differentiation. Part of transcription regulator complex. Is expressed in several structures, including alimentary system; ear; early conceptus; genitourinary system; and nervous system. Orthologous to human ABT1 (activator of basal transcription 1). [provided by Alliance of Genome Resources, Apr 2022]