生物素

Luciferin,as the light-carrier substance or the energy-transfer substance,plays an indispensability role on the luminescent system of luciferase in the biology illuminant.

在生物发光体内，荧光素作为直接释放光子的物质和能量的传递物质在荧光素酶发光体系中发挥着不可或缺的作用。

The cDNA sequence encoding ubiquitin from Musca domestica was cloned by RT-PCR and sequenced.

本研究根据GenBank已登录的真核生物泛素编码框的氨基酸序列，设计一对简并引物，RT-PCR克隆了家蝇Musca domestica泛素基因的编码区cDNA序列，并进行了测序。

Ingredients: natural moisturizing factor, lecithin, vitamin C, E, placenta nourishing and activating essence, ossein liposome, deep sea vegetal essence, bio whitening essence etc.

成分：天然水元保湿因子、卵磷脂，维他命C、E、胎盘营养活肤素、骨胶原脂质体、深海植物精华、生物美白素等。

Plant tissue and cell culture of pyrethrum cinerariifolium Trev.

在活性追踪指导下，对除虫菊细胞培养物中活性物质生物合成进行研究，以为今后通过植物细胞培养途径产生除虫菊素提供实验室小试的理论依据，提高通过植物细胞培养途径产业化生产除虫菊素的经济和技术可行性。

Disruptants of sanA lost the ability to produce nikkomycin, indicating that sanA is essential for nikkomy biosynthesis.

野生株中sanA的破坏导致失去尼可霉素的合成能力，表明sanA是尼可霉素生物合成所必需的。

As the rapid development of contemporary biochemistry technology, new-style beautiful breast cosmetic is increasing also, apparent to beautiful breast effect biochemistry additive appears ceaselessly, if placenta extracts albumen of content, royal jelly, collagen, serum to wait, curative effect of product of these biology beautiful breast is apparent and safety does not have side-effect; Product of the natural plant that is a delegate with Chinese herbal medicine beautiful breast its characteristic is safety, effect good, cost is low; Have already in product of a few series can make make the same score pectoral ridgy abundant breast element, have again in the light of Female The bounce elite element with flabby, flagging breast, still have gel of be good at bosom, agent of sparge of be good at bosom.

随着现代生化技术的迅速发展，新型的美乳化妆品也越来越多，对美乳效果明显的生化添加剂不断出现，如胎盘提取物、蜂王浆、胶原蛋白、血清等，这些生物型美乳产品疗效明显且安全无副作用；以中草药为代表的天然植物型美乳产品其特点是安全、效果好、成本低；一些系列产品中既有可使平胸隆起的丰乳素，又有针对女性乳房松弛、下垂的弹力精华素，还有健胸凝胶，健胸喷雾剂等。

The research data to demonstrate that TSN inhibits K(superscript +)-channel and facilitates L-type Ca(superscript 2+)-channel are summarized, and the mechanism of action of TSN is discussed.

综述了证明川楝素抑制多种K通道，选择地易化L型Ca(上标 2+)通道和进而升高胞内Ca浓度的研究资料，并对川楝素产生这些生物效应的机制进行了讨论。

Results of incorporation of [~3H]TdR,[~3H]Urd and [~3H] Leu indicated that rhein, emodin and aloe-emodin obviously inhibited the biosynthesis of DNA,RNA and protein of P 388 leukemia cells with the increase of the concentration of drugs, and the e...

3HTdR、[~3H]Urd及[~3H]Leu参入试验表明，大黄酸、大黄素和芦荟大黄素明显抑制P388癌细胞DNA、RNA和蛋白质的生物合成，呈剂量依从性。

Effects of four insecticides on intestinal mucosa permeability of the wolf spider were studied by exposing spiders to insecticides and then measuring the concentration of fluorescein isothiocyanate-dextran in the spiders'blood. The results showed that FITC-D concentrations of the test groups were much more than that of the control group.

采用异硫氰酸荧光素-葡聚糖作为示踪物质，通过检测拟环纹豹蛛血液内的荧光素浓度，研究了两种生物源杀虫剂和两种化学源杀虫剂对拟环纹豹蛛肠黏膜通透性的影响。

The ubiquitin proteolytic system is an important selective proteolytic system of the celler proteolytic systems, a number of them were identified as a ubiquitin chain assembly factor-E4. The U-box protein is a new family ubiquitin-protein ligase(E3), which determine the substrate specificity of ubiquitination. The U-box is a domain of 70 amino acids that is highly conserved among yeast, plant and animals, but more U-box proteins were found in plants than in animals.

泛素系统是选择性降解细胞内蛋白质的重要系统之一，U-box蛋白质是此系统中决定底物特异性识别的一种新型E3蛋白质，部分U-box蛋白质属于泛素链聚集因子-E4.U-box结构域大约由70个氨基酸残基构成，在酵母、植物和动物等真核生物中保守存在，但植物中的数目远多于动物中。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。