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$Crystallization of Proteins on Chip by Microdialysis for In Situ X-ray Diffraction Studies$

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Published on: April 11, 2021

Dynamic, Polymer-Integrated Crystals for Efficient, Reversible Protein Encapsulation.

Kenneth Han¹, Youjeong Na¹, Ling Zhang¹

¹Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.

Journal of the American Chemical Society

|June 6, 2022

Summary

This summary is machine-generated.

New polymer-integrated crystals (PIX) offer enhanced protein encapsulation. These flexible, tunable materials provide high loading efficiencies and controlled release for functional biomaterials.

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Last Updated: Sep 20, 2025

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Published on: April 11, 2021

From Constructs to Crystals – Towards Structure Determination of β-barrel Outer Membrane Proteins

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High-throughput Crystallization of Membrane Proteins Using the Lipidic Bicelle Method

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Area of Science:

Materials Science
Biomaterials Engineering
Crystallography

Background:

Crystalline materials are explored for protein encapsulation, but their rigidity limits efficiency and responsiveness.
Existing frameworks face challenges in achieving high loading and controlled release of proteins.

Purpose of the Study:

To introduce and characterize polymer-integrated crystals (PIX) as a novel platform for protein encapsulation.
To demonstrate the high loading efficiency and stimuli-responsive properties of PIX for biomaterial applications.

Main Methods:

Synthesis of polymer-integrated crystals (PIX) combining protein crystallinity with polymer dynamics.
Characterization of PIX properties, including crystallinity, flexibility, and chemical tunability.
Encapsulation and controlled release studies of guest proteins within the PIX framework.

Main Results:

PIX exhibit high protein loading efficiencies, up to 46% w/w.
The electrostatic host-guest interactions enable reversible, pH-controlled protein uptake and release.
PIX demonstrate mutual stabilization of host and guest components.

Conclusions:

Polymer-integrated crystals (PIX) represent a versatile platform for developing functional biomaterials.
PIX facilitate high-efficiency encapsulation and controlled delivery of biological macromolecules.
The tunable nature of PIX opens new avenues for advanced biomaterial design.