Predicted to enable identical protein binding activity and rRNA (guanosine-2'-O-)-methyltransferase activity. Predicted to be involved in RNA processing. Predicted to act upstream of or within rRNA 2'-O-methylation. Located in mitochondrion. Is expressed in several structures, including alimentary system; brain; egg cylinder; genitourinary system; and immune system. Orthologous to human MRM3 (mitochondrial rRNA methyltransferase 3). [provided by Alliance of Genome Resources, Apr 2022]