label: a ribonucleotide in U6 snRNA + S-adenosyl-L-methionine <=> a 2'-O-methylribonucleotide in U6 snRNA + S-adenosyl-L-homocysteine + H(+)
label_lc: a ribonucleotide in u6 snrna + s-adenosyl-l-methionine <=> a 2'-o-methylribonucleotide in u6 snrna + s-adenosyl-l-homocysteine + h(+)