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Pre-chilled swing bucket rotor

预冷摇臂转子

Company: Beckman Coulter
Catalog#: SW 50.1
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Small-scale Subcellular Fractionation with Sucrose Step Gradient
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2014-06-05
[Abstract]  Here, we introduce the protocol for small-scale and simple subcellular fractionation used in our recent publication (Taguchi et al., 2013), which uses homogenization by passing through needles and sucrose step-gradient.

Subcellular fractionation is a very useful technique but usually a large number of cells are required. Because we needed subcellular fractionation of transiently-transfected cells, we developed a protocol for smaller numbers of cells. Our protocol for the subcellular fractionation is based on the protocol published by de Araújo and Huber (de Araujo et al., 2007), although substantial modifications have been made according to our experiences and information from personal communications. As optimal conditions seem to vary between cell lines, we ...
[摘要]  在这里,我们介绍了在我们最近的出版物(Taguchi等人,2013)中使用的用于小规模和简单的亚细胞分离的方案,其通过穿过针和蔗糖梯度梯度使用匀浆。
亚细胞分离是一种非常有用的技术,但通常需要大量的细胞。因为我们需要瞬时转染细胞的亚细胞分离,我们开发了用于较小数量细胞的方案。我们的用于亚细胞分级的方案基于deAraújo和Huber(de Araujo等人,2007)公布的方案,尽管根据我们的经验和来自个人通信的信息进行了实质性的修改。由于最佳条件似乎在细胞系之间不同,我们建议进一步修改方案以优化个别实验。我们的方法很简单,但足以分析通过糖基磷脂酰肌醇或其他脂质锚例如朊病毒蛋白锚定到细胞器的内在膜蛋白或蛋白质。然而,非共价连接到膜或细胞器的膜蛋白的蛋白质似乎更容易在制备过程中从细胞器中解离,并且如果这些蛋白质是研究的目的,则可能需要进一步的修饰。
不同于连续梯度,其中感兴趣的蛋白质分散在宽范围内,步梯度分级分离在小规模实验中检测相对少量的蛋白质是有利的,因为它将感兴趣的蛋白质浓缩如果使用蔗糖浓度的适当组合。

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