label: L-gamma-glutamyl-(3R)-L-beta-ethynylserine + succinate + CO2 => L-gamma-glutamyl-L-propargylglycine + 2-oxoglutarate + O2
label_lc: l-gamma-glutamyl-(3r)-l-beta-ethynylserine + succinate + co2 => l-gamma-glutamyl-l-propargylglycine + 2-oxoglutarate + o2