preferred_name: tetrahydrosulfopterin + L-serine => 5,10-methylenetetrahydrosulfopterin + glycine + H2O
preferred_name_lc: tetrahydrosulfopterin + l-serine => 5,10-methylenetetrahydrosulfopterin + glycine + h2o
label: tetrahydrosulfopterin + L-serine => 5,10-methylenetetrahydrosulfopterin + glycine + H2O
label_lc: tetrahydrosulfopterin + l-serine => 5,10-methylenetetrahydrosulfopterin + glycine + h2o