C-terminal L-Cys-L-Leu-L-Val-L-Cys(1-) residue
c-terminal l-cys-l-leu-l-val-l-cys(1-) residue
An organic anionic group obtained by deprotonation of the terminal carboxy group of C-terminal <small>L</small>-Cys-<small>L</small>-Leu-<small>L</small>-Val-<small>L</small>-Cys residue.