查询词典 biosynthesis

In.particular, genes involving in histidine biosynthesis (hisJ、 hisG、 hisF、 hisH、 hisB and hisD) were significantly repressed in mutant strain, while other 5 genes such as fur-, ftn-, dps, yecl and bcp which related to iron homeostasis were up-regulated. In addition, after hns gene was knock-out, expression of sjh but not stpA, which encodes H-NS paralogues, increased significantly.

比较特别的是，6个参与组氨酸合成与代谢的基因hisJ、hisG、hisF、hisH、hisB以及hisD在突变体表达下调，而与铁代谢有关的5个基因fur、ftn、dps、yecI和bcp的表达明显上调。

Tumstatin is hydrone protein, the price is of direct biosynthesis is too expensive, which is disadvantage of large scale application in clinic.

肿瘤抑素属于小分子蛋白，直接生物合成造价太高，不利于临床大规模应用。

In this study, the amount of ethylene and its key biosynthesis genes expression, typical allelochemical hydroxamic acid concentration and the key regulation genes (BX1 and BX9), as well as the dynamic expression and time of relevant defense key genes of secondary substance metabolism processes were compared in ethephon treatments of different concentration and duration.

为探明外源乙烯利对玉米化学防御作用诱导的浓度和时间效应，本文采用化学和分子生物学相结合的方法，研究了不同浓度乙烯利处理玉米后，叶片乙烯释放量及其合成调控关键基因ACS和ACO表达的变化，典型化感物质丁布的含量及其关键调控基因BX1和BX9表达的变化，以及其他调控次生代谢物的关键基因表达的时间动态。

The advantages of α-hydroxyacetic acid biosynthesis over traditional chemical conversion are wide range of reaction condition,high conversion ratio and green process.

化学法生产羟基乙酸存在原料消耗大、产品收率低、环境污染严重等缺点；生物法合成羟基乙酸条件温和、底物转化率高，为绿色合成羟基乙酸提供强有力的技术支持。

Effects of isovaleric acid on the biosynthesis of biotechspiramycin were carried out in order to improve the percentage of isovalerylspiramycin Ⅲ and total isovalerylspiramycin of multi-components biotechspiramycin .

为了进一步提高多组分必特螺旋霉素中异戊酰螺旋霉素Ⅲ和总异戊酰螺旋霉素的含量，本文通过外源添加浓度为0.5 g/L的异戊酸使异戊酰螺旋霉素Ⅲ和总异戊酰螺旋霉素的含量分别比对照提高了38.32%和31%。

The progress of the study on the sex pheromones in Lasiocampidae in different respects, such as species-specific characteristics of the sex pheromones, its biosynthesis and regulatory mechanism and, its carriers and application in the field were reviewed.

从枯叶蛾科昆虫性信息素所具有的物种特异性、性信息素的生物合成及调控机理和性信息素载体选择及应用现状等方面系统阐述枯叶蛾科昆虫性信息素的研究现状及最新进展。

Laticiferous cells in the bark tissues of rubber tree are the main place where the nature rubber biosynthesis takes place.

天然橡胶的主要来源是巴西橡胶树，而乳管是橡胶生物合成的主要场所。

The progress on chemical synthesis and biosynthesis of levulinic acid and 5-aminolevulinic acid(5-ALA) were discussed.

基于生物质资源的利用和开发，论述了乙酰丙酸的制取、5-氨基乙酰丙酸的化学合成与生物合成，阐述了其在医药、农业等方面的应用，讨论了发展趋势和亟待解决的问题。

The first committed step in fatty acid biosynthesis is the carboxylation of acetyl CoA to form malonyl CoA using CO2 in the form of bicarbonate HCO3-.

在脂肪酸的从头合成过程中，参入脂肪酸链的二碳单位的直接提供者并不是乙酰CoA，而是乙酰CoA的羧化产物——丙二酸单酰CoA(malonyl-CoA)。

The pathway The first committed step in Fatty acid biosynthesis is the carboxylation of acetyl CoA to form malonyl CoA which is catalyzed by the biotin-containing enzyme acetyl CoA carboxylase.

途 径 脂肪酸合成的第一个关键步骤是乙酰-COA 羧基化形成丙二酰单酰 COA ，这一步是在含生物素的酶乙酰-COA 羧化酶的催化下进行的。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐