糖蛋白作为南极鱼类的生物抗冻剂。
Glycoproteins as biological antifreeze agents in antarctic fishes.
作者信息
DeVries A L
出版信息
Science. 1971 Jun 11;172(3988):1152-5. doi: 10.1126/science.172.3988.1152.
PMID:5574522
Abstract
The blood serums of Antarctic fishes freeze at -2 degrees C, which is approximately 1 degrees C below the melting points of their serums. This thermal hysteresis is due to the influence of serum glycoproteins. The temperatures of freezing and melting of aqueous solutions of the purified glycoproteins suggest that this thermal hysteresis results from the adsorption of the glycoprotein molecule onto the surface of ice crystals.
摘要
南极鱼类的血清在-2摄氏度时会冻结，这比它们血清的熔点低约1摄氏度。这种热滞现象是由血清糖蛋白的影响导致的。纯化糖蛋白水溶液的冻结和融化温度表明，这种热滞现象是由于糖蛋白分子吸附在冰晶表面所致。
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