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By splicing in genes from other bugs, the company was able to engineer synthetic metabolic pathways—ones that do not exist in nature—that enable the bacteria to produce isoprene from the sugars found in plant materials such as sugar cane, corn cobs and switchgrass, a tall-growing variety native to North America.

Genecor的科学家们将其它细菌的基因拼接到大肠杆菌上,从而在大肠杆菌上制造出一种自然界中不存在的代谢物合成途径。它使细菌能从植物材料中的糖分生产出异戊二烯——这些含有糖类的植物包括甘蔗、玉米芯,还有原产于北美洲的高个儿品种柳枝稷。

We can make use of chip to analysis virus gene group; construct mutation detection technique of heredity diseases and become normal detection technique of many heredity diseases; supervise the changes of cell gene expression, research pathogenic theory of virus; differentiate bacteria gene types and identify bacteria strains, provide base data for screening and supervise drug-fast gene.

利用基因芯片可加速对病毒基因组的功能分析;可建立遗传病的突变检测技术,并成为对多种遗传病的常规诊断技术;可用来监测宿主细胞基因表达的改变,研究病毒的致病机理;基因芯片还可用来对细菌基因的分型和菌种鉴定,为筛选和监测细菌的抗药性基因提供基础数据。

The results showed that the bacteria B7 came into the logarithmic growth phase for 5 h culture. Both the fermentation liquid and its filtration could inhibit C. colhounii effectively, and the fermentation of dilution l0 times also showed significant differences compared with the control. The inhibiting effect of its fermentation media filtration was even more significant in the optimizing test, with the maximal inhibition rate of 100%. The best fermentation condition was 0.5% glucose, 0.1% ammonium muriate, without extra mineral, pH 5.4, temperature 28℃. Based on the morphological properties and 16S rRNA sequence, the bacterium B7 was identified as the Bacillus subtilis.

结果表明,该菌体在培养了5h后即进入对数生长期;B7细菌的发酵液原液和无菌滤液均能抑制病原菌的生长,其中发酵液原液的10^3稀释液的抑菌效果仍与对照之间存在显著的差异;发酵条件优化试验中发现该细菌的无菌滤液最大抑菌率达100%,最佳发酵条件为葡萄糖0.5%、氯化钱0.1%、不加无机盐、pH5.4,温度28℃;结合形态学特征和16S rRNA的序列分析,将该菌株鉴定为枯草芽孢杆菌。

Bacterially triggered CDDS 细菌触发型细菌触发型 CDDS The presence of azo reductase enzymes play pivotal role in the release of drug from azo bond prodrugs while glycosidase activity of the colonic microflora is responsible for liberation of drugs from glycosidic prodrugs.

偶氮还原酶溶解酶的存在在偶氮键药释放过程中发挥关键作用,结肠菌群的糖苷酶活性负偶氮还原酶溶解酶的存在在偶氮键药释放过程中发挥关键作用,结肠菌群的糖苷酶活性负溶解释放过程中发挥关键作用的糖苷酶活性糖苷药物的解放。

A small fraction of bacterial chromosomes (such as those in Streptomyces and Borrelia) is linear and possess telomeres, which are very different from those of the eukaryotic chromosomes in structure and functions.

一小部分细菌的染色体(如链霉菌属和疏螺旋体属细菌的染色体)是线性的并且具有端粒,但是它们的端粒与其他的真核生物的端粒在结构和功能上有很大的区别。

The invention has excellent commonality and practicability, can better reflect the diversity of eubacterium in an experimental subject and can be suitable for the analyzing on the environment samples from soil, deposits, the gastrointestinal tracts of human and animal, and the like.

本发明提供的用于真细菌多样性分析的针对16S rRNA基因的引物具有很好的通用性和实用性,能良好反映实验对象中真细菌的多样性,可以适用于来源于土壤,沉积物,人畜胃肠道等环境样品的分析。

The results showed that for carbon steel exposed to sea water for 1~120 month, there were large quantities of SRB congregating in the internal rust layer, arid synchronously there were different numbers of heterotropic bacteria, iron bacteria and sulfide-oxidizing bacteria.

通过在海水中现场挂样,检测了碳钢内锈层中的硫酸盐还原菌、异养菌、铁细菌和硫氧化菌的数量,用SEM观察了内锈层中腐蚀性细菌的形态和分布,并测定了内锈层中的FeS含量,研究了内锈层中微生物对碳钢海水腐蚀的影响及碳钢内锈层中的微生物及其腐蚀与大型生物、锈层、温度等的关系。

The results showed that the main pathogenic bacteria ledlocal cows to endometritis were streptococcus,the next,Escherichia coli,staphylococcus and pseudomonas aeruginosa.NFPL could quickly reduce thenumber of the bacteria in uterus,and strongerly inhibit these bacteria in vitro.NFPL could excit the uterus,which occurred in enlarging contractionamplitude.NFPL could lower abnormal high content of progesterone and raiseabnormal low oestradiol.

结果表明,引起本地奶牛子宫内膜炎的主要致病菌是链球菌,其次是大肠埃希氏杆菌,葡萄球菌,绿脓杆菌;新促孕液能能迅速减少病牛子宫内细菌的数量,在体外对这些细菌也有较强的抑制作用;新促孕液对兔子宫有明显的兴奋性作用,主要表现在收缩波幅的加大;新促孕液能降低病牛血清异常升高的孕酮含量,升高异常降低的雌二醇含量。

The power-time curves of E.coli reacting with Co-SG at different temperature has been determined by microcalorimtric method The multiplication rate constant k, generation time G,bacterial growth inhibition ratio I,total thermogenetic quantity Q, the heat quantity of a single bacterium Q_(0) and the heat quantity of a single bacterium per minute have also been calculated according to the power-time curves.

用微量热法测定了大肠杆菌及其在Co -SG配合物作用下的热谱曲线,计算了速率常数k ,传代时间G、抑制I、总产热量Q、单个细菌的产热量Q0 和每分钟单个细菌的产热量 Q0 ,建立了部分代谢参数之间的关系,探讨了大肠杆菌在不同温度和Co -SG作用下的代谢抑制,发现可用t、tr、tg和 Q0 定量表征在不同温度下大肠杆菌的生长代谢和药物的抗菌活性。

Generally, the size of genome and number of genes are increased during evolution from bacteria to eukaryote, but the interesting thing is that the type and number of PheRS domains in eukaryotae are obviously less than those in bacteria.

通常在生物从细菌到真核生物的进化过程中,其基因组的大小和基因的数目都有所增加,然而有趣的是,真核生物中PheRS的结构域类型和数目都明显少于细菌的PheRS。

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