查询词典 helix

However,the loss of 53 amino acid residues which were located at the 2nd activation domain resulted in the partial deletion of the putative loop-helix structure as well as the complete deletion of the heptad leucine repeat.

这53个氨基酸残基位于活化区2，会导致融合蛋白中部分环-螺旋结构以及全部七聚体亮氨酸重复序列的丢失。

The research results of Retrovirus, Filovirus, Orthomyxovirus and Paramyxovirus showed that 6-helix bundle formed by heptad repeat regions of fusion proteins was the key to start membrane fusion.

对反转录病毒、纤丝病毒、正粘病毒和副粘病毒等的研究表明，其囊膜表面融合蛋白的七肽重复区HR1和HR2相互作用形成六螺旋束是引发膜融合的关键。

The N- and C-terminal heptad repeat (designated NHR and CHR, respectively) regions of gp41 extracellular domain can form a six-helix bundle by interaction, which brings both the viral and target cell membranes into proximity for fusion.

因此，任何化合物如能抑制NHR和CHR的结合，使六螺旋束结构不能形成，就能阻止病毒进入靶细胞，从而保护免疫细胞不被感染。

The interaction between the N- and C-terminal heptad repeat regions of the gp41 extracellular domain leads to the formation of a six-helix bundle (6-HB), representing the fusion-active gp41 core.

当gp120与靶细胞表面的CD4及共受体结合后，gp41胞外段N-末端重复序列与C—术端重复序列相互作用，形成六螺旋束(6—HB)，即gp41融合活性核心，从而导致病毒融合。

On hobber processing the gear of different modulus,tooth number and different helix angle,that will select difference the option of shipand ship will be calculated,will again check table to determine,bring certain difficulty to processing.

在滚齿机上加工不同的齿轮，需要选择不同的挂轮，挂轮的选择要边计算边查表才能确定，工作量较大。

The stress was applied by a helix micrometer. The in-plane compressive or tensile strains were created and the stress in the sample can be calculated according to Hooke's law.

层结构的应力由螺旋测微器施加，可以产生平面内的压应力和应变，大小可以由胡克定律算出。

ABSTRACT In this article the manufacturing method and characteristics of the double wall brazed tube with inner helix groove are given.

摘 要 介绍了内螺旋槽双层卷焊管的制造方法及这种管材的特点。

Based on general process of public policy analysis, using the Triple Helix theory, The Interest Group theory and Policy Network theory, with adopting methods of historical analysis, literature analysis, case study and comparative analysis, the dissertation firstly examines irrespectively the history, content, process and outcome of American research university technology transfer policies; Then, the dissertation analyses the value orientation, experiences and issues systematically, putting forward some policy suggestions for Chinese university technology transfer according to Chinese practical needs.

本文依公共政策分析的一般逻辑，运用三重螺旋理论、利益集团理论和政策网络理论，采取历史分析法、文献法、个案法、比较法等研究方法，首先从美国研究型大学技术转移政策历史、政策文本、政策过程、政策结果几方面分别论述，然后对美国研究型大学技术转移政策的价值取向、经验和问题进行了总体分析，并结合我国实际需要，为我国高校技术转移提出适宜的政策建议。

For several days, the watson, Krick jubilantly are building the model in theirs office with the iron sheet and the iron wire. on February 28, 1953, the first DNA double helix structure's molecular model was born finally.

一连几天，沃森、克里克在他们的办公室里兴高采烈地用铁皮和铁丝搭建着模型。1953年2月28日，第一个DNA双螺旋结构的分子模型终于诞生了。

The bovine Smad 9 gene codes 345 amino acids and shares 78.84%, 79.21%, 77.88% and 70.38% similarity in amino acid sequences with human, mouse, rat and jungle fowl respectively. The bovine Smad 9 had no signal peptide and transmembrane helix.

通过核酸序列分析发现，牛Smad 9基因编码345个氨基酸残基，牛Smad 9蛋白无跨膜区和信号肽序列，该蛋白与人、小鼠、大鼠和红原鸡在氨基酸序列上分别有78.84%，79.21%，77.88%和70.38%的同源性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。