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Interaction between antifreeze protein and ice crystal facet evaluated by ice-channel electrophoretic measurements of threshold electric field strength. | LitMetric

AI Article Synopsis

Article Abstract

The chemical interaction between antifreeze proteins (AFPs) and ice crystals is evaluated via electrophoresis of AFP-anchored microparticles in fluidic channels formed in frozen aqueous sucrose. Straight fluidic channels are created in a flat glass chamber connecting two Ag/AgCl electrodes. This configuration allows us to estimate an electric field strength exerted on probe particles migrating along the channel. When the channel width is comparable to the particle size, the particle is immobile because of the resistance force induced by the interaction with the ice wall. However, when the overall electrophoretic force surpasses the resistance force, the microsphere starts to migrate. From the threshold electric field strengths determined for unmodified and AFP-modified particles, the resistance forces for the chemical interaction between AFPs and ice wall are estimated.

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http://dx.doi.org/10.1016/j.aca.2020.03.025DOI Listing

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