label: dehydrospermidine + [deoxyhypusine synthase]-L-lysine = [deoxyhypusine synthase]-N-(4-aminobutylidene)-L-lysine + propane-1,3-diamine
label_lc: dehydrospermidine + [deoxyhypusine synthase]-l-lysine = [deoxyhypusine synthase]-n-(4-aminobutylidene)-l-lysine + propane-1,3-diamine