Lyotropic liquid crystalline cubic phases as versatile host matrices for membrane-bound enzymes

Wenjie Sun, Jijo J Vallooran, Wye-Khay Fong, Raffaele Mezzenga

Research output: Contribution to journalArticleResearchpeer-review

29 Citations (Scopus)

Abstract

Lyotropic liquid crystalline cubic mesophases can function as host matrices for enzymes because of their biomimetic structural characteristics, optical transparency, and capability to coexist with water. This study demonstrates that the in meso immobilized membrane-bound enzyme d-fructose dehydrogenase (FDH) preserves its full activity, follows ideal Michaelis–Menten kinetics, and shows improved stability compared to its behavior in solution. Even after 5 days, the immobilized FDH retained its full activity in meso, whereas a model hydrophilic enzyme, horseradish peroxidase, maintained only 21% of its original activity. We reason that the lipidic bilayers in the three-dimensional structures of cubic mesophases provide an ideal environment for the reconstitution of a membrane-bound enzyme. The preserved activity, long-term stability, and reusability demonstrate that these hybrid nanomaterials are ideal matrices for biosensing and biocatalytic fuel cell applications.
Original languageEnglish
Pages (from-to)1507-1512
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume7
Issue number8
DOIs
Publication statusPublished - 6 Apr 2016

Cite this