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Calcium chloride dihydrate

氯化钙二水合物

Company: Wako Pure Chemical Industries
Catalog#: 039-00431
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Boron Uptake Assay in Xenopus laevis Oocytes
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Date:
2018-03-05
[Abstract]  Boron (B) is essential for plant growth and taken up by plant roots as boric acid. Under B limitation, B uptake and translocation in plants are dependent on the boric acid channels located in the plasma membrane. Xenopus leavis oocyte is a reliable heterologous expression system to characterize transport activities of boric acid channels and related major intrinsic proteins (aquaporins). Here, we outline the protocols for expression of boric acid channels and boric acid uptake assay in Xenopus leavis oocytes. [摘要]  硼(B)对植物生长至关重要,并被植物根部吸收为硼酸。 在B限制下,植物中的B吸收和转运依赖于位于质膜中的硼酸通道。 非洲爪蟾卵母细胞是一种可靠的异源表达系统,用于表征硼酸通道和相关主要内在蛋白(水通道蛋白)的运输活性。 在这里,我们概述了在非洲爪蟾卵母细胞中表达硼酸通道和硼酸摄取测定的方案。

【背景】硼对植物生长是必不可少的,但是它在积累时是有毒的。硼通过鼠李糖聚半乳糖醛酸II区果胶多糖的交联在细胞壁中具有结构功能(Funakawa和Miwa,2015)。在溶液中,B主要以生理pH下的硼酸形式存在[B(OH)3 H 2 O 2 B(OH)4] + - (p k a = 9.24)]。硼酸是一种小的中性分子,因此在生物膜上显示出显着的被动扩散(Dordas等人,2000)。此外,植物利用属于主要内在蛋白质(MIP,水通道蛋白)家族的硼酸通道和硼酸盐出口者(BOR家族)来维持B体内平衡(Takano等人,2008)。

最初,玉米PIP1在非洲爪蟾卵母细胞中表达并且显示出促进硼酸摄入比注水卵母细胞高30%(Dordas et al。 2000>)。然后,显示拟南芥NIP5; 1促进硼酸摄取比注水卵母细胞高5至9倍(Takano等人,2006)。与发现缺乏NIP5; ...

Preparation of Knockdown Transformants of Unicellular Charophycean Alga, Closterium peracerosum-strigosum-littorale Complex
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Date:
2016-05-20
[Abstract]  To prepare the knockdown transformants of the Closterium peracerosum-strigosum-littorale (C. psl.) complex, particle bombardment was applied with a newly constructed vector (pSA0104) with an endogenous constitutive promoter fused to a DNA fragment corresponding to an antisense strand of a target gene. Using a hygromycin resistance gene (aph7”), hygromycin-resistant colonies were selected. After the second screening, integration of the vector into the genome was checked by PCR and the knockdown effect was evaluated by Western blotting using a specific antibody against the target protein. [摘要]  为了制备鬼臼藓藻(Clonsterium peracerosum-strigosum-littorale)复合物的敲低转化体,用新构建的载体(pSA0104)应用粒子轰击,所述载体具有内源性 组成型启动子,其与对应于靶基因的反义链的DNA片段融合。 使用潮霉素抗性基因( aph7")选择潮霉素抗性菌落。 在第二次筛选后,通过PCR检查载体到基因组中的整合,并使用针对靶蛋白的特异性抗体通过蛋白质印迹评估敲低效应。

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