adenosine in U6 snRNA + S-adenosyl-L-methionine => N(6)-methyladenosine in U6 snRNA + S-adenosyl-L-homocysteine + H(+)
adenosine in u6 snrna + s-adenosyl-l-methionine => n(6)-methyladenosine in u6 snrna + s-adenosyl-l-homocysteine + h(+)