Mussel derived phase-separating adhesive proteins and their peptide mimics. Upper: schematic illustration of mfp-3S being delivered onto a wet substrate surface in the form of a single-component coacervate followed by its hardening into the mussel’s adhesive plaque together with other mfps. Lower: sequences of native mfp-3S and truncated peptide mfp3S-pep with their corresponding pI. Letters in red, blue, and green denote aromatic, basic, and acidic amino acids, respectively.