Total synthesis of analgesic conotoxin MrVIB via selenocysteine-assisted folding

Secs for your folding problems: Selenocysteine (Sec) residues were used to drive the folding of conotoxin MrVIB, a previously "unfoldable" miniprotein with therapeutic potential (see picture). This simple strategy should generally facilitate the folding of peptides and proteins with multiple disulfide bonds.