Predicted to enable tRNA (adenine(58)-N1)-methyltransferase activity. Predicted to be involved in tRNA methylation. Predicted to act upstream of or within methylation and tRNA processing. Predicted to be part of tRNA (m1A) methyltransferase complex. Predicted to be active in nucleus. Is expressed in several structures, including eye; lens placode; midbrain; optic vesicle; and solid lens vesicle. Orthologous to human TRMT61A (tRNA methyltransferase 61A).