Implementing Zn<sup>2+</sup> ion and pH-value control into artificial mussel glue proteins by abstracting a His-rich domain from preCollagen.

Arias, Sandra; Amini, Shahrouz; Krüger, Jana M; Bangert, Lukas D; Börner, Hans G · Soft Matter · 2021

basic_science · Level V

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Abstract

A His-rich domain of preCollagen-D found in byssal threads is derivatized with Cys and Dopa flanks to allow for mussel-inspired polymerization. Artificial mussel glue proteins are accessed that combine cysteinyldopa for adhesion with sequences for pH or Zn2+ induced β-sheet formation. The artificial constructs show strong adsorption to Al2O3, the resulting coatings tolerate hypersaline conditions and cohesion is improved by activating the β-sheet formation, that enhances E-modulus up to 60%.

Medical subject headings