Predicted to enable methyl-CpG binding activity; methylcytosine dioxygenase activity; and transition metal ion binding activity. Predicted to be involved in several processes, including DNA demethylation; dendrite morphogenesis; and positive regulation of macromolecule metabolic process. Predicted to act upstream of or within inner cell mass cell differentiation; regulation of DNA methylation; and regulation of genetic imprinting. Predicted to be active in nucleus. Orthologous to human TET1 (tet methylcytosine dioxygenase 1). [provided by Alliance of Genome Resources, Apr 2022]