Enables chromatin binding activity and transcription cis-regulatory region binding activity. Involved in cerebellar granule cell precursor proliferation and fat cell differentiation. Acts upstream of or within several processes, including circadian rhythm; negative regulation of apoptotic process; and olfactory bulb interneuron development. Located in nucleus. Part of transcription regulator complex. Is expressed in several structures, including alimentary system; central nervous system; integumental system; sensory organ; and urinary system. Orthologous to human ATF5 (activating transcription factor 5). [provided by Alliance of Genome Resources, Apr 2022]