chelation 中文意思是什麼

chelation 解釋
生物化學作用
  1. It is difficult to define the detection limits obtained by chelation-solvent extraction.

    確定螯合--溶劑萃取法所得到的檢測限頗為困難。
  2. Gfral was high expressed in e. coli after iptg induction. by ni2 + chelation affinity chromatography, the purified recombinant gfral protein were obtained. based on the evolutionary trace method, multiple sequence alignment and dendrogram construction were then carried out by the clustalx program and constructed a phylogenetic tree from a multiple sequence alignment for a protein family

    2 . gdnf的表達及其對pc12基因工程細胞的影響用本教研室已構建好的表達質粒pet一gdnf轉化大腸桿菌bl21 （ de3 ） ，經lmmipto誘導gdnf表達，並在niz氣nta柱上進行純化，稀釋復性后，純度達90 %以上。
  3. Both the frequency and intensity of 1146. 0cm - 1 change largely, etc. discussed and compared the mechanism of these interaction in detail we got some conclusions as following : both zn2 + and cd2 + ions can chelate with po2 - and come into being - po2 - me2 + n7 ( purine ) chelate. as to zn2 + ions, when r2. 0, the quantity of po2 - zn2 + n7 is directly linear with r. when r2. 0, zn2 + ions even can chelate with c at n3 - o2 sites and this chelation will disrupt the h - bond between gc base pairs and make the dna structure unstable. as to cd2 + ions, only when r is within 1. 0 - 1. 5 can this chelation take place and the relation of the quantity of this chelate with r is not easy to conclude

    通過對這些變化進行詳細討論和分析，我們得到了如下的結論： zn ~ （ 2 + ）和cd ~ （ 2 + ）都可以跟dna的磷酸基團螯合，形成- po _ 2 ~ - … me ~ （ 2 + ） … n7 （ g ）螯合物，但是前者的螯合跟離子濃度有很大的關系，在摩爾濃度比小於2 . 0時，螯合物的生成量跟r成正比關系，而後者的螯合跟離子的關系不是很明顯，只有當r處於1 . 0至1 . 5之間時，螯合作用才能進行，並且螯合物的生成量跟r之間沒有很明顯的關系存在。
  4. This paper reviews the effects of al on photosynthesis, photoprotective systems, water use efficiency ( wue ), water content, carbohydrate content, mineral nutrition, organic acids, and nitrogen metabolism in plant shoot, and also the mechanisms of al detoxification ( chelation of al with small organic compounds, and isolating al in the some parts, which are insensitive to al, such as vacuoles or epidermal cells ) by al accumulators

    為此，本文綜述了鋁對植物地上部光合作用、光保護系統、水分利用效率、含水量、碳水化合物含量、礦質營養、有機酸和氮代謝的影響，並對富鋁植物的解鋁毒機制（鋁與小分子有機酸螯合和把鋁隔離在對鋁不敏感的表皮細胞和液泡內）進行了綜述。
  5. Then the product was purified by glutathione sepharose 4b chelation affinity chromatography, and upper purified gst - gnrh / trs fusion proteins was received for further the foundations established in the scientific research and the real application

    表達產物經谷胱甘肽瓊脂糖4b親和層析純化后，得到了純度較高的gst - gnrh trs融合蛋白。為進一步科研和實際應用奠定基礎。
  6. It is difficult to define the detection limits obtained by chelation - solvent extraction

    確定螯合- -溶劑萃取法所得到的檢測限頗為困難。
  7. The expressed products were purified by metal ( ni2 + ) chelation affinity chromatography and tested by western - blot. the results showed that his - tagged vp6 fusion proteins have a positive reaction with anti - jl94 serum

    採用western - blot對表達產物及純化產物進行反應原性分析，結果表明所得his - taggedvp6融合蛋白具有較好的抗原反應特異性。
  8. Ac - hac is a kind of polymer, which has strong chelation ability with cd2 + because of its carboxyl group

    本方法得到的cds納米粒子比前一種方法得到的cds納米粒子具有更好的發光性能。
  9. These mechanisms involve in the binding of heavy metals to cell wall, immobilization exclusion of the plasma membrane, efflux of these toxic metal ions, reduction of heavy metal transport, compartmentalization and metal chelation by tonoplast - located transporters, expression of more general stress response mechanisms such as stress proteins

    這些機制包括重金屬離子與細胞壁的結合，限制重金屬離子透過細胞膜，重金屬離子或化合物的排出，重金屬在植物體內的轉移，重金屬的絡合與區隔化以及植物對脅迫的基本的反應機制如脅迫蛋白含量的變化等。
  10. The chelation ability made ac - hac act as a protection layer on the surface of cds nanoparticles, which reduced surface states and improved the band edge emission. 3

    這是因為聚丙烯酸?丙烯酸羥丙酯在一定程度上能夠修飾cds納米粒子表面，減少表面缺陷，提高納米粒子的帶隙發光。
  11. The expressed proteins were purified by ni2 + chelation affinity chromatography. the recombinant proteins were prepared with the purity more than 95 %

    用ni ~ nta親和層析柱進行純化，獲得1 』 rka膜外域各結構域重組蛋白，純度均在95 %以上。
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