Enables DNA binding activity. Predicted to be involved in cellular protein-containing complex assembly; positive regulation of macromolecule biosynthetic process; and positive regulation of neuron projection development. Part of ATF1-ATF4 transcription factor complex. Is expressed in several structures, including branchial arch; early conceptus; genitourinary system; limb; and maxillary process. Orthologous to human ATF1 (activating transcription factor 1). [provided by Alliance of Genome Resources, Apr 2022]