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NalgeneTM Oak Ridge High-Speed PPCO Centrifuge Tubes

NalgeneTM Oak Ridge High-Speed PPCO Centrifuge Tubes

Company: Thermo Fisher Scientific
Catalog#: 3119-0010
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Quantitation of Cytochromes b559, b6, and f, and the Core Component of Photosystem I P700 in Cyanobacterial Cells
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2016-11-05
[Abstract]  Cytochrome (Cyt) b559, an important and essential core component of photosystem II in the photosynthetic electron transport system, is a heme-bridged heterodimer protein composed of an alpha subunit (PsbE) and a beta subunit (PsbE), and its reduced form has an absorption maximum in the α-band at 559 nm. The amounts of Cyt b559 can be determined by spectrophotometrical measurement of reduced minus oxidized difference spectra that are normalized with absorbance of isosbestic point at 580 nm. The authors use differential extinction coefficients of Cyt b559 [Δε(559-580 nm) = 15.5 mM-1·cm-1], which have been reported by Garewal and Wasserman (1974). In addition to the Cyt b559, this ... [摘要]  dA 6m DNA免疫沉淀随后深度测序(DIP-Seq)是鉴定和研究N 6 - 甲基脱氧腺苷(dA 6)的全基因组分布的关键工具, 6m )。这种新的DNA修饰的精确功能仍然需要完全阐明,但是已知转录起始位点不存在并且从外显子中排除,表明在转录调节中的作用(Koziol等人,2015 )。重要的是,其存在表明DNA可能比先前认为的更多样化,因为进一步的DNA修饰可能存在于真核DNA中(Koziol等人,2015)。该方案描述了进行dA 6m DNA免疫沉淀(DIP)的方法,其用于表征高等真核生物中的第一dA 6m甲基化酶分析(Koziol等人。,2015)。在该协议中,我们描述了如何基因组DNA被分离,片段化,然后用识别基因组DNA中的dA 6m 的抗体拉下含有dA 6m 的DNA。在随后的洗涤之后,消除不含dA 6m的DNA片段,并且从抗体洗脱含有dA 6m的片段,以便进一步处理用于随后的分析。

[背景] 此协议是为了识别基因组中包含dA 6m 的区域而开发的。它可以用于检测不同基因组中的dA 6m 。作为指导,本方案从用于检测RNA中腺苷甲基化的现有方法建立(Dominissini等人,2013)。我们开发这个协议,并适应它的dA 6 m 在DNA中的检测,而不是检测腺苷甲基化RNA。这是必需的,因为当时没有方案可用于允许在真核DNA中dA ...

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