label: adenosine(2142) in 25S rRNA + S-adenosyl-L-methionine = N(1)-methyladenosine(2142) in 25S rRNA + S-adenosyl-L-homocysteine + H(+)
label_lc: adenosine(2142) in 25s rrna + s-adenosyl-l-methionine = n(1)-methyladenosine(2142) in 25s rrna + s-adenosyl-l-homocysteine + h(+)