查询词典 mutagenesis

API-B has been successfully expressed in both yeast and E. coli system, and the expression products have been purified to homogeneity. By the method of deletion mutagenesis, it was proved that the intact N- and C- terminuses of APIB were necessary for the inhibitory activity, consistent with the tertiary structures of the inhibitors from the STl superfamily.

成功地建立了API-B在酵母及大肠杆菌体系中的表达方法和纯化路线，并通过缺失突变的研究，证明API-B的N-端及C-端附近序列对于维持分子的高级结构和抑制活性非常重要，该结果与STI抑制剂超家族成员的结构特征相一致。

The immunoglobulin like anti AChR antibody without complement binding activity is successfully made from a pathogenic anti AChR antibody IgG 637 by site directed mutagenesis.Key words:receptor, cholinergic;myasthenia gravis;point mutation;complement-binding;antibodies

本研究利用定点突变技术，从完型抗乙酰胆碱受体抗体IgG 637制备了不能激活补体的突变型抗乙酰胆碱受体抗体IgG 637/K 322 A，为最终制备出可用于治疗重症肌无力的无补体激活功能的单价抗乙酰胆碱受体抗体提供依据。

This paper discusses the use of ultraviolet mutagenesis combined chemostat enrichment method to screen high-temperature resistent and high-yield lactic acid bacteria.

本文探讨了利用紫外线诱变结合恒化器富集筛选耐高温高产乳酸菌的方法。

The role of inhibition mutagenesis: an important mechanism for tumors to generate one cell mutagen in the role of the outside world under the gene mutation, and lycopene can block this process, play a role in cancer.

抑制诱变作用：肿瘤生成的重要机制之一是组织细胞在外界诱变剂的作用下发生基因突变，而番茄红素能阻断这个过程，发挥抗癌作用。

Mutagenesis methods, mutagen selection, isolation and identification technology had been constantly improved and widely applied for more than seventy years.

经过七十多年的发展，果树诱变的手段、诱变剂的选择、分离筛选和鉴定技术已经成熟并被广泛应用，果树诱变育种体系日趋完善，并获得很多优良性状或品种。

The effect of the two mutagenesis to the rate constant of the two microalage cell and the EPA and DHA cotents in the two miroalage cells proved that EMS was the better mutagen.

比较这两种诱变方法对海洋微藻的生长繁殖速度和脂肪酸含量的影响，结果证明采用化学诱变的处理方法更好。

A transposon mutagenesis system applicable for Xanthomonas campestrispv.campestrishas been developed by transferring the transposonTn5gusA5,which contains the gus reporter gene,to the broad host rangvector pLAFR1 and taking the advantage of incompatibility between pLAFR1and pPH1JI plasmids.Five different types of exopolysaccharidedeficient mutants related respectively to eight different mutated sites wereisolated by applying the system to mutagenize the Xcc wild type strain.

本研究将含gus报告基因的转座子Tn5gusA5转座到广谱宿主载体质粒pLAFR1后，利用pLAFR1与pPH1JI质粒的不相容性，建立了一套适合于甘蓝黑腐病菌的转座子诱变体系，应用该体系诱变甘蓝黑腐病菌野生型菌株，成功地分离到5种不同类型、分别涉及8个不同突变位点的胞外多糖突变体。

However, environmental mutagens can also induce mutations at undamaged sites and result in the so-called nontargeted mutagenesis.

但是环境诱变剂引起的突变也可发生在非DNA损伤部位，它被称之为非定标性突变。

The results indicated that space mutagenesis can n ot only improve existing restorers,also create new restorers.

结果说明，空间诱变既可改良现有恢复系，又可创造新恢复系。

Methods of domestication and UV mutagenesis were used to prepare tea wine yeast.

采用驯化与紫外线诱变并用的方法研制茶酒酵母。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。