Enables several functions, including DNA binding activity; DNA-binding transcription activator activity, RNA polymerase II-specific; and p53 binding activity. Involved in several processes, including platelet aggregation; regulation of cellular macromolecule biosynthetic process; and regulation of definitive erythrocyte differentiation. Acts upstream of or within several processes, including hemopoiesis; positive regulation of osteoblast proliferation; and regulation of primitive erythrocyte differentiation. Located in nucleus. Is expressed in several structures, including alimentary system; central nervous system; ear; early conceptus; and genitourinary system. Used to study myelodysplastic syndrome; myelofibrosis; and thrombocytopenia. Human ortholog(s) of this gene implicated in several diseases, including Down syndrome; X-linked recessive disease (multiple); beta thalassemia; colon adenocarcinoma; and hematologic cancer (multiple). Orthologous to human GATA1 (GATA binding protein 1). [provided by Alliance of Genome Resources, Apr 2022]