查询词典 plasmid

OBJECTIVE: To construct a prokaryotic expression plasmid of the main catalytic domain of dipeptidyl peptidase of murine fibroblast activation protein αand obtain the target fusion protein in order to provide basis for production of antibodies and anti-tumor vaccine targeting FAPα.

目的：构建小鼠成纤维细胞激活蛋白α二肽基肽酶催化核心序列的高效原核表达载体，进行该序列的原核表达、纯化和复性，为下一步高效抗体制作和以FAPα为靶标的抗肿瘤疫苗研发提供实验基础。

Methods In this study,a plasmid vector,rAd5,and rAAV2 were used to transfect rat cochlear marginal cells of stria vascularis by injection into the perilymph through the round window membrane,and the transfection efficiency, target tissue accessibility, cell/ tissue toxicity, time course of expression, and effect on hearing were evaluated in vivo and in vitro.

结果三种载体对原代培养的大鼠耳边缘细胞的转染研究发现，腺病毒的转染效率最高，而腺相关病毒转染对细胞活性影响最小。rAAV2和rAd5对大鼠耳蜗组织的感染实验发现，腺病毒和腺相关病毒携带的增强型绿色荧光蛋白可在多种耳蜗组织中及转染对侧耳蜗组织表达，且并不引起明显的耳蜗组织细胞凋亡。rAAV2携带的EGFP基因在第90天时仍可检测到大量表达。rAd5携带的EGFP基因在第30天时表达明显减弱。

This reporter plasmid provides a useful tool to investigate the hrp regulation and to dissect the pathogenesis of this phytopathogen.

该报告质粒的构建，为研究hrp基因表达调控机制，揭示植物病原细菌的致病机制提供了有效的材料。

In this paper the thymus DNA of calf and the pBs plasmid are the main objects of our studies in ultraweak luminescence. By means of PIAS(Photon-counting image acquisition), ultraweak luminescence detector and Lambda Bio 40 of UV/VIS spectrophotometer, we studied the UL of DNA induced by the three oxygen free radicals: singlet oxygen Oa, hydroxy radical and superoxide anion(O2 ). We found that the OH can greatly increase the UL intensity of DNA.

本论文以小牛胸腺DNA和质粒pBs为实验材料，利用光子图像探测系统(Photon-counting image acquistion，PIAS)、微弱发光测量仪和UV／VIS分光光度计和生物统计学的成组比较法原理对单线态氧(~1O_2)、羟自由基、超氧阴离子(O_2~-)三种氧自由基诱导DNA超弱发光的变化过程进行了研究，结果发现这三种氧自由基中·OH能诱导DNA的超弱发光发生显著的增强变化，而其他两种氧自由基对DNA的超弱发光并无显著诱导作用。

Total RNA was isolated from cultured human pigmental cells and mRNA was reversly transcribed into cDNA. Then PCR was used to amplify the TRP -2 coding region. The PCR product was cloned into pUC19 plasmid and sequenced, then subcloned into vector pGEX-4T-1. The TRP-2 protein was expressed hi E coli of DH5 a as fusion protein with glutathioneS-transferase induced by IPTG. The fusion protein was purified by glutathione resin column.

我们通过RT—PCR的方法扩增TRP—2编码基因，克隆至pUC19载体并测序，再亚克隆至GST融合表达载体pGEX—4T—1，转化大肠杆菌，IPTG诱导表达了GST/TRP—2融合蛋白，并分析鉴定表达蛋白的可溶性，最后第四军医大学硕士学位论文一用谷氨酚胺树脂柱纯化表达的蛋白。

In order to study the expression and functional characteristics of dehydrin gene during different growth, and make the polycolonal antibody, using wheat plumelet under the water deficit condition as experiment material, and its total RNA was extracted. The target dehydrin gene through RT-PCR was got, connect to the cloning vector PUCM-T, recombination expression plasmid PET-32a-wzy1-1 was constructed according to recombination of cloned vector PUCM-T-WZY1-1 of wheat dehydrin gene in this experiment.

为研究小麦在不同时期脱水素基因的表达情况和生物学功能及抗体制备，以小麦幼芽为材料，经干旱胁迫处理后，提取总RNA，通过RT-PCR得到小麦类脱水素基因片段(WZY1-1)，再连接至克隆载体PUCM-T，并成功构建重组表达质粒PET-32a-wzy1-1，将阳性重组质粒转化于受体菌BL21(DE3)感受态细胞中，经IPTG诱导表达，进行表达产物的聚丙烯酰胺凝胶电泳检测。

PAP-C23, amplified from mature pokeweed antiviral protein gene by PCR, was cloned into the expression vector PET101, and then the recombinant plasmid was transformed into Escherichia coli BL21(DE3). The recombinant mutant PAP was expressed high-levelly induced with IPTG.

用KCL溶液染SDS-PAGE胶，切下表达的目的蛋白，冰浴研磨后用磷酸缓冲液溶解，再加入等体积的福氏不完全佐剂，乳化完全后，免疫家兔，制备抗PAP蛋白的多克隆抗体，间接ELISA法测定所制备的抗血清的效价为1：1000。

In the biotechnology area, we has set up polytype Handson yeast express system which owned freedom intellectual property rights, including:(1) URA3 - defective nutrition host cell strain HU-II;(2) secretion and intracellylar expressing plasmid carrier pMPT-01、pMPT-02;(3) a platform for semi-works

在生物技术领域：建立了拥有自主知识产权、较为完善的多型汉逊酵母表达系统，包括：（1）URA3 -营养缺陷型宿主细胞株HU-II；（2）分泌型和胞内型表达质粒载体pMPT-01、pMPT-02；（3）汉逊酵母细胞电穿孔转化操作程序及多拷贝、稳定化整合转化子筛选程序；（4）中试生产规模的发酵和纯化平台。

Objective: To construct prokaryotic expression plasmid of VEGF-SEA gene, and to get the fusion proteins.

目的：构建血管内皮生长因子－葡萄球菌肠毒素A基因的原核表达质粒，获得VEGF-SEA融合蛋白。

DSPP. After linearized by XhoI and recovery, the plasmid was microinjected into the male pronucleus of the zygotes and the zygotes in good condition were implanted into pseudopregnant mice.

为动态地研究DSPP在牙齿发育、矿化不同阶段的作用，以及对机体其他器官的可能影响，我们首先用显微注射法获得了G0代DSPP转基因小鼠。

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％。