• 대한화학회지
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• 제62권2호
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• pp.106-112
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• 2018

Ice-binding proteins have an affinity for ice. They create a gap between the melting and freezing points by inhibiting the growth of ice, known as thermal hysteresis (TH). Interestingly, moderately active LeIBP and hyperactive FfIBP are almost identical in primary and tertiary structures, but differ in TH activity. The TH of FfIBP is tenfold higher than that of LeIBP, due to a subtle difference in their ice-binding motifs. To further evaluate the difference in TH, the interactions were investigated by ice-etching and molecular docking. Ice-etching showed that FfIBP binds to the primary and secondary prism, pyramidal, and basal planes; previously, LeIBP was found to bind to the basal and primary prism planes. Docking analysis using shape complementarity (Sc) showed that the hyperactive FfIBP had higher Sc values for all four ice planes than LeIBP, which is comparable with TH. Docking can be used to describe the hyperactivity of IBPs.

• 한국결정성장학회지
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• 제5권3호
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• pp.197-208
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• 1995

과냉각도가 0.35 K보다 작은 영역에서 ice dendrite의 결정 성장 특성 및 morphology는 과냉각도 뿐만 아니라 자연대류의 함수임을 관찰하였다. 즉, 결정 성장에 대한 자연대류의 영향은 결정 성장 자체에 의한 moving boundary 효과보다 우세함을 알 수 있었다. 본 실험 범위에서 ice dendrite의 성장 속도 및 tip size(edge 및 basal plane)를 과냉각도의 함수로 정량화하였다.