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Updated: May 6, 2026
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Combining Wet and Dry Lab Techniques to Guide the Crystallization of Large Coiled-coil Containing Proteins
Published on: January 6, 2017
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Electric response of multiarm protein crystals
D Ray1,2, F Platten1,3, K Kang1
1Forschungszentrum Jülich, Institute of Biological Information Processing (IBI-4), Biomacromolecular Systems and Processes, Jülich, Germany.
Physical Review. E
|February 20, 2026
Summary
Electric fields control protein crystal structures by altering protein interactions. This study classifies three main multiarm protein crystal morphologies and reveals how fields guide crystallization pathways.
Area of Science:
- Biophysics
- Materials Science
Background:
- Electric fields influence protein-protein interactions and phase behavior.
- Protein crystallization and liquid-liquid phase separation are sensitive to external fields.
Purpose of the Study:
- To investigate how electric field frequency and amplitude affect the morphology of forming protein crystals.
- To classify multiarm protein crystal structures and understand field-driven crystallization pathways.
Main Methods:
- Lysozyme-sodium thiocyanate solutions were subjected to varying electric fields.
- Microscopy images of protein crystals were analyzed using Fourier analysis.
- Classification of protein crystal morphologies based on field parameters.
Main Results:
- Applied electric fields govern the number and angular distribution of crystal arms.
- Three principal multiarm protein crystal morphologies (flowerlike, triconic, conic) were identified and classified.
- Field-driven metastable structures like tubules and fibers were observed near the crystallization boundary.
Conclusions:
- Electric fields effectively steer protein crystallization pathways.
- The study provides insights into the mechanisms governing multiarm protein crystallization.
- External electric fields offer a method to control protein crystal formation and morphology.
