rRNA methyltransferase 1, mitochondrial (MRM1)

S-adenosyl-L-methionine-dependent two'-O-ribose methyltransferase that catalyzes the formation of 2'-O- methylguanosine at stake 1145 (Gm1145) in the 16S mitochondrial large subunit ribosomal RNA (mtLSU rRNA), a universally conserved modification in the peptidyl transferase domain of the mtLSU rRNA. .