Fig. 3: Calcium ion-induced SF LLPS is mediated by L-chain.

a Illustration of the silk fibroin (SF) structure before and after the addition of reducing agents. b Fluorescence images of SF coacervates with different concentrations of 2-mercaptoethanol, dithiothreitol (DTT), and ethanol ([Ca²⁺]=37.5 mM, scale bar=50 µm).