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di-Sodium hydrogen phosphate

di-Sodium hydrogen phosphate

公司名称: Carl Roth
产品编号: P030.2
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Tethered Chromosome Conformation Capture Sequencing in Triticeae: A Valuable Tool for Genome Assembly
Author:
Date:
2018-08-05
[Abstract]  Chromosome conformation capture sequencing (Hi-C) is a powerful method to comprehensively interrogate the three-dimensional positioning of chromatin in the nucleus. The development of Hi-C can be traced back to successive increases in the resolution and throughput of chromosome conformation capture (3C) (Dekker et al., 2002). The basic workflow of 3C consists of (i) fixation of intact chromatin, usually by formaldehyde, (ii) cutting the fixed chromatin with a restriction enzyme, (iii) religation of sticky ends under diluted conditions to favor ligations between cross-linked fragments ... [摘要]  染色体构象捕获测序(Hi-C)是一种全面询问细胞核中染色质三维定位的有效方法。 Hi-C的发展可以追溯到染色体构象捕获的分辨率和通量的连续增加(3C)(Dekker et al。,2002)。 3C的基本工作流程包括(i)通常用甲醛固定完整的染色质,(ii)用限制酶切割固定的染色质,(iii)在稀释条件下重新连接粘性末端,以促进交联片段之间的连接或随机片段之间的那些和(iv)量化基因组基因座对之间的连接事件的数量(de Wit和de Laat,2012)。在最初的3C方案中,通过半定量PCR扩增对应于少量基因组位点(“一对一”)的选定连接接头来测量连接频率(Dekker et al。,2002 )。然后,染色体构象捕获芯片(4C)和染色体构象捕获碳复制(5C)技术扩展3C以分别以“一对多”或“多对多”方式计算结扎事件。 Hi-C(Lieberman-Aiden et al。,2009)最终将3C与下一代测序相结合(Metzker,2010)。此处,在再连接之前,用生物素标记的核苷酸类似物填充粘性末端以在后续步骤中富集具有连接连接的片段。然后对Hi-C文库进行高通量测序,并将得到的读数映射到参考基因组,允许以“多对多”方式确定接触概率,其分辨率仅受限制性位点的分布限制和阅读深度。 Hi-C的首次应用是阐明人类基因组中的全球染色质折叠原理(Lieberman-Aiden et ...

Quantitative Determination of Ascorbate from the Green Alga Chlamydomonas reinhardtii by HPLC
Author:
Date:
2016-12-20
[Abstract]  Ascorbate (Asc, also called vitamin C) is of vital importance to the cellular functions of both animals and plants. During evolution, Asc has become one of the most abundant metabolites in seed plants; however, Asc contents in cyanobacteria, green algae and bryophytes are very low. Here we describe a sensitive and reliable HPLC method for the quantitative determination of cellular Asc content in the green alga Chlamydomonas reinhardtii. [摘要]  抗坏血酸(Asc,也称为维生素C)对动物和植物的细胞功能至关重要。 在进化过程中,Asc已经成为种子植物中最丰富的代谢物之一; 然而,蓝藻,绿藻和苔藓植物中的Asc含量非常低。 在这里,我们描述了一种灵敏可靠的HPLC方法,用于定量测定绿藻衣藻中细胞Asc含量。

背景 针对高等植物开发了用于确定细胞Asc含量的先前方案,其中细胞Asc的量足够高以用于分析。 这些方案不适用于绿色藻类,因为植物材料的量和细胞Asc的水平通常都受到限制。 因此,需要开发一种灵敏度提高到μM范围来测量绿藻中细胞Asc的新方法。

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