Enables DNA-binding transcription factor activity and sequence-specific DNA binding activity. Involved in several processes, including cochlea development; response to gamma radiation; and type IV hypersensitivity. Located in nucleus. Biomarker of asthma. Human ortholog(s) of this gene implicated in hypoparathyroidism; hypoparathyroidism-deafness-renal disease syndrome; nephrosis; and sensorineural hearing loss. Orthologous to human GATA3 (GATA binding protein 3). [provided by Alliance of Genome Resources, Apr 2022]