Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/112781
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Type: | Journal article |
Title: | Protein surface functionalisation as a general strategy for facilitating biomimetic mineralisation of ZIF-8 |
Author: | Maddigan, N. Tarzia, A. Huang, D. Sumby, C. Bell, S. Falcaro, P. Doonan, C. |
Citation: | Chemical Science, 2018; 9(18):4217-4223 |
Publisher: | Royal Society of Chemistry |
Issue Date: | 2018 |
ISSN: | 2041-6520 2041-6539 |
Statement of Responsibility: | Natasha K. Maddigan, Andrew Tarzia, David M. Huang, Christopher J. Sumby, Stephen G. Bell, Paolo Falcaro and Christian. J. Doonan |
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. |
Rights: | This journal is © The Royal Society of Chemistry 2018 |
DOI: | 10.1039/c8sc00825f |
Grant ID: | http://purl.org/au-research/grants/arc/DP170103531 |
Published version: | http://dx.doi.org/10.1039/c8sc00825f |
Appears in Collections: | Aurora harvest 3 Chemistry publications |
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hdl_112781.pdf | Published Version | 1.1 MB | Adobe PDF | View/Open |
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