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001049215 1001_ $$0P:(DE-Juel1)130749$$aKang, Kyongok$$b0$$eCorresponding author$$ufzj
001049215 245__ $$aElectric response of multiarm protein crystals
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001049215 520__ $$aElectric fields can modify protein-protein interactions and thereby influence phase behavior. In lysozyme–sodium thiocyanate solutions, we recently observed shifts in both the crystallization boundary and theliquid-liquid phase separation line under a weak applied field, along with a range of distinct crystal morphologies.Here, we explore how forming protein crystals respond to variations in field frequency and amplitude, focusingon the morphologies of complex, multiarm structures. At constant protein and salt concentrations, the appliedfield governs both the number and the angular distribution of crystal arms. These features are analyzed throughFourier analysis of microscopy images, revealing cooperative angular ordering among the arms. Based on theseobservations, we classify three principal multiarm protein crystal (pX) morphologies: flowerlike pX (dominantat high field strengths), triconic pX (appearing nonmonotonically at lower fields), and conic pX (widely observedunder low-field conditions). Near the crystallization boundary, field-driven metastable structures such as tubules,clusters, nematic domains, and fibers also occur in response to the field. These findings demonstrate that electricfields effectively steer protein crystallization pathways and provide insight into the mechanisms of variousmultiarm crystallization.
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001049215 7001_ $$0P:(DE-Juel1)180761$$aPlatten, Florian$$b1$$ufzj
001049215 7001_ $$0P:(DE-Juel1)184311$$aRay, Debes$$b2$$ufzj
001049215 773__ $$0PERI:(DE-600)2844562-4$$a10.1103/ql7f-wzpr$$p014403$$tPhysical review / E$$v113$$x2470-0045$$y2026
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