Projects per year
Abstract
Protein crystallization is an important tool for structural biology and nanostructure preparation. Here, we report on kinetic pathway-dependent protein crystals that are controlled by light. Photo-responsive crystallites are obtained by complexing the model proteins with cationic azobenzene dyes. The crystalline state is readily switched to a dispersed phase under ultraviolet light and restored by subsequent visible-light illumination. The switching can be reversibly repeated for multiple cycles without noticeable structure deterioration. Importantly, the photo-treatment not only significantly increases the crystallinity, but creates crystallites at conditions where no ordered lattices are observed upon directly mixing the components. Further control over the azobenzene isomerization kinetics produces protein single crystals of up to ≈50 μm. This approach offers an intriguing method to fabricate metamaterials and study optically controlled crystallization.
Original language | English |
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Article number | e202303880 |
Number of pages | 9 |
Journal | Angewandte Chemie - International Edition |
Volume | 62 |
Issue number | 28 |
Early online date | 9 May 2023 |
DOIs | |
Publication status | Published - 10 Jul 2023 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Azobenzene
- Crystallization
- Kinetic Pathway
- Photo Responsiveness
- Protein Cage
Fingerprint
Dive into the research topics of 'Optically Controlled Construction of Three-Dimensional Protein Arrays'. Together they form a unique fingerprint.Projects
- 2 Active
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LIBER Kostiainen: Life-like hybrid materials Kostiainen
Kostiainen, M., Luotonen, O. & George, L.
01/01/2022 → 31/12/2024
Project: Academy of Finland: Other research funding
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ProCrystal (ERC): Multicomponent Protein Cage Co-Crystals
Kostiainen, M., Ahmed, A., De, S., Liu, Q. & Zhou, Y.
01/09/2021 → 31/08/2026
Project: EU: ERC grants
Equipment
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Bioeconomy Research Infrastructure
Jukka Seppälä (Manager)
School of Chemical EngineeringFacility/equipment: Facility
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