tRNA_MT is a family of bacterial tRNA (adenine(22)-N(1))-methyltransferase enzymes with a Rossmann-like fold. This enzyme carries out the function of N1-adenosine methylation at position 22 of bacterial tRNA [1].

1: The YqfN protein of Bacillus subtilis is the tRNA: m1A22 methyltransferase (TrmK). Roovers M, Kaminska KH, Tkaczuk KL, Gigot D, Droogmans L, Bujnicki JM; Nucleic Acids Res. 2008;36:3252-3262. PMID:18420655