label: N(3)-methylpseudouridine(1915) in 23S rRNA + S-adenosyl-L-homocysteine + H(+) => pseudouridine(1915) in 23S rRNA + S-adenosyl-L-methionine
label_lc: n(3)-methylpseudouridine(1915) in 23s rrna + s-adenosyl-l-homocysteine + h(+) => pseudouridine(1915) in 23s rrna + s-adenosyl-l-methionine