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Stimuli Responsive Hierarchical Assembly of P22 Virus-like Particles

Journal Article · · Chemistry of Materials
Biomimetic systems responsive to environmental stimuli are of growing interest due to their useful, intriguing, and sometimes unexpected properties. Hierarchical self-assembly of biological building blocks has emerged as a powerful means of creating biomaterials with collective properties. Here, we show P22 virus-like particles (VLPs) functionalized with a spider silk protein derivative on the capsid exterior assemble into a hierarchical structure due to spider silk/spider silk interactions at low pH and reversibly dissemble upon raising the pH. We also show that the capsid arrays can be assembled through electrostatic interaction between the negatively charged capsids and a positively supercharged GFP mutant and can be reversed by raising the ionic strength. Most notably, we found that the supercharged GFP could bind to the hierarchically assembled material under high salt conditions but not to the individual capsids under the same high salt conditions. As a result, the binding of the charged macromolecule under high salt conditions demonstrates a collective behavior of the hierarchically assembled system that is not present with the unassembled, individual components of the system.
Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1461344
Journal Information:
Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 7 Vol. 30; ISSN 0897-4756
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Facile and Efficient Construction of Water‐Soluble Biomaterials with Tunable Mesoscopic Structures Using All‐Natural Edible Proteins journal April 2019
A review on virus protein self-assembly journal November 2019
Virus-derived materials: bury the hatchet with old foes journal January 2020
Supramolecular step-growth polymerization kinetics of pre-assembled triblock copolymer micelles journal January 2019
Functional protein shells fabricated from the self-assembling protein sheets of prokaryotic organelles journal January 2020
Bioengineering Strategies for Protein-Based Nanoparticles journal July 2018

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