Protein surface functionalisation as a general strategy for facilitating biomimetic mineralisation of ZIF-8

Natasha K. Maddigan, Andrew Tarzia, David M. Huang, Christopher J. Sumby, Stephen G. Bell, Paolo Falcaro, Christian J. Doonan

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

The durability of enzymes in harsh conditions can be enhanced by encapsulation within metal-organic frameworks (MOFs) via a process called biomimetic mineralisation. Herein we show that the surface charge and chemistry of a protein determines its ability to seed MOF growth. We demonstrate that chemical modification of amino acids on the protein surface is an effective method for systematically controlling biomimetic mineralisation by zeolitic imidazolate framework-8 (ZIF-8). Reaction of surface lysine residues with succinic (or acetic) anhydride facilitates biomimetic mineralisation by increasing the surface negative charge, whereas reaction of surface carboxylate moieties with ethylenediamine affords a more positively charged protein and hinders the process. Moreover, computational studies confirm that the surface electrostatic potential of a protein is a good indicator of its ability to induce biomimetic mineralisation. This study highlights the important role played by protein surface chemistry in encapsulation and outlines a general method for facilitating the biomimetic mineralisation of proteins.

Originalspracheenglisch
Seiten (von - bis)4217-4223
Seitenumfang7
FachzeitschriftChemical Science
Jahrgang9
Ausgabenummer18
DOIs
PublikationsstatusVeröffentlicht - 1 Jan 2018

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Biomimetics
Membrane Proteins
ethylenediamine
Surface chemistry
Encapsulation
Biomimetic processes
Proteins
Metals
Chemical modification
Surface charge
Lysine
Seed
Electrostatics
Durability
Amino Acids
Enzymes

ASJC Scopus subject areas

  • !!Chemistry(all)

Dies zitieren

Maddigan, N. K., Tarzia, A., Huang, D. M., Sumby, C. J., Bell, S. G., Falcaro, P., & Doonan, C. J. (2018). Protein surface functionalisation as a general strategy for facilitating biomimetic mineralisation of ZIF-8. Chemical Science, 9(18), 4217-4223. https://doi.org/10.1039/c8sc00825f

Protein surface functionalisation as a general strategy for facilitating biomimetic mineralisation of ZIF-8. / Maddigan, Natasha K.; Tarzia, Andrew; Huang, David M.; Sumby, Christopher J.; Bell, Stephen G.; Falcaro, Paolo; Doonan, Christian J.

in: Chemical Science, Jahrgang 9, Nr. 18, 01.01.2018, S. 4217-4223.

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Maddigan, Natasha K. ; Tarzia, Andrew ; Huang, David M. ; Sumby, Christopher J. ; Bell, Stephen G. ; Falcaro, Paolo ; Doonan, Christian J. / Protein surface functionalisation as a general strategy for facilitating biomimetic mineralisation of ZIF-8. in: Chemical Science. 2018 ; Jahrgang 9, Nr. 18. S. 4217-4223.
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