label: 2-methyladenosine(2503) in 23S rRNA + 5'-deoxyadenosine + L-methionine + 2 oxidized [2Fe-2S]-[ferredoxin] + S-adenosyl-L-homocysteine => adenosine(2503) in 23S rRNA + 2 reduced [2Fe-2S]-[ferredoxin] + 2 S-adenosyl-L-methionine
label_lc: 2-methyladenosine(2503) in 23s rrna + 5'-deoxyadenosine + l-methionine + 2 oxidized [2fe-2s]-[ferredoxin] + s-adenosyl-l-homocysteine => adenosine(2503) in 23s rrna + 2 reduced [2fe-2s]-[ferredoxin] + 2 s-adenosyl-l-methionine