16S rRNA (guanine1405-N7)-methyltransferase

16S rRNA (guanine-N)-methyltransferase (EC2.1.1.179, methyltransferase Sgm, m7G1405 Mtase, Sgm Mtase, Sgm, sisomicin-gentamicin methyltransferase, sisomicin-gentamicin methylase, GrmA, RmtB, RmtC, ArmA) is an enzyme with systematic name S-adenosyl-L-methionine:16S rRNA (guanine-N)-methyltransferase. This enzyme catalyses the following chemical reaction