【摘要】 抗冻蛋白是一类能控制冰晶生长和抑制冰晶之间发生重结晶的蛋白质,并具有两种明显不同的活性——热滞活性和重结晶抑制活性.植物抗冻蛋白的抗冻特性是低热滞活性和高重结晶抑制活性.植物抗冻蛋白虽然在DNA和氨基酸水平上具有较大的差异,几乎没有同源性,但却拥有相似的高级结构,冰晶结合位点也有一定的相似性,而且都可以通过“表面互补”模型较好地解释它们与冰晶之间的相互作用.全面介绍了植物抗冻蛋白的种类及特性,以及它们的高级结构和冰晶结合位点.更多还原

【Abstract】 Antifreeze proteins (AFPs) are a family of proteins capable of controlling the growth of ice and inhibiting the recrystallization between ice granules and possess two distinct antifreeze activities which are termed thermal hysteresis (TH) activity and recrystallization inhibition (RI) activity respectively. The characteristics of antifreeze activities of plant AFPs are the low TH activity and high RI activity. Though there is a distinct difference in DNA and amino acids with almost no homology, plant AFPs display similar advanced structures and ice-binding sites. Moreover, the interaction between ice and all plant AFPs can be explained well by the model "Surface Complementarity". In this paper, the species and characteristics, advanced structures, and ice-binding sites of plant AFPs being researched at present were completely discussed.更多还原