Many overwintering organisms produce antifreeze proteins ( AFPs) that can be adsorbed onto the surface of ice crystals and modify their growth. 很多越冬的生物会产生抗冻蛋白,这些抗冻蛋白能够吸附到冰晶的表面改变冰晶形态并抑制冰晶的生长。
Antifreeze proteins ( AFPs), with the thermal hysteresis activity, are wildly distributed proteins which can change the growth and inhibit the recrystallization of the ice. 本文讨论了影响抗冻蛋白活性的因素,介绍了抗冻蛋白热滞活性和重结晶抑制效应的定量测定方法。
Differential scanning calorimetry ( DSC) was used to measure the thermal hysteresis activity ( THA). The results reveal that when the concentration of the protein is 20 mg/ ml, the THA of the AFPs is 0.46 ℃. 差示扫描量热法(DSC)测定结果表明,当蛋白浓度为20mg/ml时,抗冻蛋白的热滞活性(THA)为0·46℃。
Antifreeze proteins ( AFPs) were a kind of protein or glycoprotein which inhibited the growth of ice crystals. 抗冻蛋白是一种能抑制冰晶生长的蛋白质或糖蛋白质。
Photoperiod, temperature and humidity are the external factors that regulate the metabolism of AFPs; and the changes of hormone in the body may be the direct internal causes that control the AFPs'synthesis in the fat body. 光周期,气温和湿度是调控AFPs生物合成与降解的三种外部因子,而体内激素的变化可能是直接调节脂肪体合成AFPs的内部因子。
Two kinds of models of "hydrogen_bonding match" and "surface complementarity" were presented to explain the molecular mechanism of AFPs, and the latter has been gradually developed to the general mechanism for its stronger advantages. AFPs与冰晶结合的分子机理主要有“氢键结合”模型和“表面互补”模型,而后者具有更强的优势,已逐渐发展成AFPs通用性的分子机理。
Comparing with fish and plant AFPs, the insect AFPs has higher therm hysteresis activity and unique chemical structure features. 和鱼类,植物AFPs相比,昆虫AFPs具有更高的热滞活性和独特的化学结构特征。
Anti-freezing proteins ( AFPs) are the new type of proteins isolated from overwintering plants, which involve in the plant responses to low temperature stress. 植物抗冻蛋白是从许多抗冻植物中分离的、参与植物抵御冻害反应的一类新型蛋白。
Application research of AFPs in agriculture, fish culture, food industry, zoology and medicine; AFPs在农业、渔业、食品工业、动物学和医学等领域的应用研究;
Recent progress in application research of antifreeze proteins ( AFPs) is reviewed. 综述了近年来抗冻蛋白(antifreezeproteins,AFPs)应用研究的进展。
Expression of AFPs in bacteria and yeast; relationship between AFPs and cell membrane, etc. AFPs在细菌和酵母菌中的表达以及AFPs和细胞膜的关系等。
The characteristics of antifreeze activities of plant AFPs are the low TH activity and high RI activity. 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。
Plant antifreeze proteins ( AFPs) have only recently been studied. 植物抗冻蛋白(AFPs)的研究起步较晚。
Antifreeze proteins ( AFPs) are the thermal hysteresis proteins that have the ability to modify the growth and inhibit the recrystallization of the ice. 抗冻蛋白是一类具有热滞效应、冰晶形态效应和重结晶抑制效应的蛋白质。
This result indicated that antifreeze proteins ( AFPs) were expressed in cold_induced carrot seedlings. 由此推测实验的胡萝卜品种在冷诱导过程中有抗冻蛋白(AFP)表达。
In this paper, the species and characteristics, advanced structures, and ice-binding sites of plant AFPs being researched at present were completely discussed. 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。
The heterologous over-expression of genes encoding AFPs in freezing-sensitive plants can enhance the freezing resistance of host plants. 异源超表达抗冻蛋白基因能赋予敏感宿主植物抗冻能力。
The contents include: property and variety of AFPs; 内容包括:AFPs的特性和种类;
At present AFPs with solved or modeled three_dimensional structure can dock to specific faces of ice by surface complementarity, though diversified forces leading to the formation of this surface complementarity should be further investigated. 目前已测定或建模了三维结构的AFPs都能与冰晶的特定表面形成表面互补,但形成这种表面互补的各种作用力还有待于进一步的研究。
Antifreeze proteins ( AFPs), known as thermal hysteresis proteins have the ability to inhibit ice nucleators and ice recrystallization. 抗冻蛋白(AFPs),也称热滞蛋白,具有降低溶液的冰点,抑制重结晶的能力。
Reexamine in postoperative March, the primary hepatocarcinoma patient has 17 example AFPs to drop, account for 70.8 ( 17/ 24), Among them 11 AFPs drop to normally. 术后3月复查,原发性肝癌患者有17例AFP下降,占70.8%(17/24),其中11例AFP降至正常。
Compared with the counters assigned in uniform length, CS can economize the SRAM memory with the same accuracy. Lastly, the implement project of AFPS based on FPGA ( Field Programmable Gate Array) is presented. 在保证一定的计数精度的同时,相对于均匀分配等长计数空间的方法,提高了存储空间利用率。最后,设计了基于FPGA(FieldProgrammableGateArray:现场可编程门阵列)的AFPS算法的实现方案。
AFPs interact with ice surfaces or ice nuclei and inhibit ice growth. AFPs作用于冰晶或是冰核的表面而抑制它们的生长。
It is discussed in detail that the implementation technique of three modules in framework of AFPS algorithm, and the resource consumption is analyzed. 详细讨论了AFPS算法三个模块的实现方法,分析了各模块的资源占用情况。