label: [CysO sulfur-carrier protein]-Gly-NH-CH2-C(O)-S-L-Cys + H2O <=> [CysO sulfur-carrier protein]-C-terminal Gly-Gly + L-cysteine + H(+)
label_lc: [cyso sulfur-carrier protein]-gly-nh-ch2-c(o)-s-l-cys + h2o <=> [cyso sulfur-carrier protein]-c-terminal gly-gly + l-cysteine + h(+)