label: L-seryl-[3-methyl-2-oxobutanoate dehydrogenase] + phosphate => O-phospho-L-seryl-[3-methyl-2-oxobutanoate dehydrogenase] + H2O
label_lc: l-seryl-[3-methyl-2-oxobutanoate dehydrogenase] + phosphate => o-phospho-l-seryl-[3-methyl-2-oxobutanoate dehydrogenase] + h2o