The function of TRDMT1 (tRNA aspartic acid methyltransferase 1, Ensembl gene identifier ENSG00000107614) is as follows. Specifically methylates cytosine 38 in the anticodon loop of tRNA(Asp) (PubMed:16424344). Has higher activity on tRNA(Asp) modified with queuosine at position 34 (PubMed:30093495). .