Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and sequence-specific double-stranded DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to act upstream of or within several processes, including heart looping; negative regulation of neuron differentiation; and neuron differentiation. Predicted to be part of transcription regulator complex. Predicted to be active in nucleus. Orthologous to human LBX1 (ladybird homeobox 1). [provided by Alliance of Genome Resources, Apr 2022]