preferred_name: formation of peptidyl-cystine persulfide by sulphur transfer from H2S
preferred_name_lc: formation of peptidyl-cystine persulfide by sulphur transfer from h2s
label: formation of peptidyl-cystine persulfide by sulphur transfer from H2S
label_lc: formation of peptidyl-cystine persulfide by sulphur transfer from h2s