Predicted to enable tRNA (guanine) methyltransferase activity. Predicted to be involved in tRNA methylation. Predicted to act upstream of or within methylation. Predicted to be located in cytosol and nucleolus. Is expressed in central nervous system; craniocervical region bone; and sensory organ. Orthologous to human THUMPD3 (THUMP domain containing 3). [provided by Alliance of Genome Resources, Apr 2022]