From sequence to color.

The article focuses on synthetic eumelanintype biopolymers such as mussel-inspired polydopamine and optical, electronic, and free-radical properties that make them attractive for materials and biomedicine applications. It mentions biopolymers show that tyrosine containing tripeptides can serve as tunable precursors for polymeric eumelanin-like pigments, with properties that depend on the peptide sequence and oxidative polymerization.