Enables DNA binding activity and zinc ion binding activity. Acts upstream of or within several processes, including astrocyte fate commitment; embryonic placenta development; and positive regulation of syncytium formation by plasma membrane fusion. Located in nucleus. Is expressed in several structures, including extraembryonic component; limb; metanephros; placenta; and thymus. Orthologous to human GCM1 (glial cells missing transcription factor 1). [provided by Alliance of Genome Resources, Apr 2022]