N(6)-methyladenosine(1618) in 23S rRNA + S-adenosyl-L-homocysteine + H(+) => adenosine(1618) in 23S rRNA + S-adenosyl-L-methionine
n(6)-methyladenosine(1618) in 23s rrna + s-adenosyl-l-homocysteine + h(+) => adenosine(1618) in 23s rrna + s-adenosyl-l-methionine