Predicted to enable tRNA (guanine-N1-)-methyltransferase activity. Predicted to be involved in mitochondrial tRNA methylation and tRNA N1-guanine methylation. Predicted to act upstream of or within methylation and tRNA processing. Predicted to be located in nucleus. Predicted to be active in mitochondrial matrix. Human ortholog(s) of this gene implicated in combined oxidative phosphorylation deficiency 26. Orthologous to human TRMT5 (tRNA methyltransferase 5). [provided by Alliance of Genome Resources, Apr 2022]