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Random primed DNA labeling kit

随机引物DNA标记试剂盒

Company: Roche Diagnostics
Catalog#: 11004760001
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Direct Visualization of the Multicopy Chromosomes in Cyanobacterium Synechococcus elongatus PCC 7942
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Date:
2018-08-05
[Abstract]  Cyanobacteria are prokaryotic organisms that carry out oxygenic photosynthesis. The fresh water cyanobacterium Synechococcus elongatus PCC 7942 is a model organism for the study of photosynthesis and gene regulation, and for biotechnological applications. Besides several freshwater cyanobacteria, S. elongatus 7942 also contains multiple chromosomal copies per cell at all stages of its cell cycle. Here, we describe a method for the direct visualization of multicopy chromosomes in S. elongatus 7942 by fluorescence in situ hybridization (FISH). [摘要]  蓝细菌是进行含氧光合作用的原核生物。 淡水蓝藻 Synechococcus elongatus PCC 7942是用于研究光合作用和基因调控以及生物技术应用的模式生物。 除了几种淡水蓝藻, S. 细胞 7942在其细胞周期的所有阶段每个细胞还含有多个染色体拷贝。 在这里,我们描述了一种直接可视化 S中多拷贝染色体的方法。 通过荧光原位杂交(FISH)测定细菌 7942。

【背景】蓝藻是原核微生物,其利用与高等植物中的叶绿体类似的产氧光合系统。虽然 Escherichia coli 和枯草芽孢杆菌等细菌具有单个圆形染色体,但是几种淡水蓝细菌每个细胞有多个圆形染色体(Mann和Carr,1974; Labarre 等人,1989; Binder和Chisholm,1995)。淡水蓝藻 Synechococcus elongatus PCC 7942(以下简称 S.longatus 7942)每个细胞携带3-8个染色体拷贝(Griese et al。,2011; Watanabe et al。,2012; Watanabe et al。,2015)。已经建立了荧光报告子 - 操纵子系统来获取 S的多拷贝染色体的图像。 elongatus 7942(Chen et al。,2012; Jain et ...

Fluorescence in situ Hybridization to the Polytene Chromosomes of Anopheles Mosquitoes
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Date:
2013-08-20
[Abstract]  Fluorescence in situ hybridization (FISH) is a method that uses a fluorescently labeled DNA probe for mapping the position of a genetic element on chromosomes. A DNA probe is prepared by incorporating Cy-3 or Cy-5 labeled nucleotides into DNA by nick-translation or a random primed labeling method. This protocol was used to map genes (Sharakhova et al., 2010) and microsatellite markers (Kamali et al., 2011; Peery et al., 2011) on polytene chromosomes from ovarian nurse cells and salivary glands of malaria mosquitoes. Detailed physical genome mapping performed on polytene chromosomes has the potential to link DNA sequences to specific chromosomal structures such as heterochromatin (Sharakhova et al., 2010). This method also allows comparative ... [摘要]  荧光原位杂交(FISH)是一种使用荧光标记的DNA探针来绘制遗传元件在染色体上的位置的方法。 通过缺口翻译或随机引物标记法将Cy-3或Cy-5标记的核苷酸掺入DNA中来制备DNA探针。 该方案用于将基因(Sharakhova等人,2010)和微卫星标记物(Kamali等人,2011; Peery等人, >,2011)对来自卵巢保护细胞和疟疾蚊子的唾液腺的多角体染色体。 在多聚染色体上进行的详细的物理基因组作图具有将DNA序列连接到特异性染色体结构(例如异染色质)的潜力(Sharakhova等人,2010)。 该方法还允许比较细胞遗传学研究(Sharakhova等人,2011; Xia等人,2010)和物种系统发育的重建(Kamali等人, ,2012)。

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