preferred_name: isopeptide cross-linking via N6-(L-isoglutamyl)-L-lysine
preferred_name_lc: isopeptide cross-linking via n6-(l-isoglutamyl)-l-lysine
label: isopeptide cross-linking via N6-(L-isoglutamyl)-L-lysine
label_lc: isopeptide cross-linking via n6-(l-isoglutamyl)-l-lysine