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从人细胞中对带有TAP标签的功能性蛋白质进行串联亲和纯化。

Tandem affinity purification of functional TAP-tagged proteins from human cells.

作者信息

Gregan Juraj, Riedel Christian G, Petronczki Mark, Cipak Lubos, Rumpf Cornelia, Poser Ina, Buchholz Frank, Mechtler Karl, Nasmyth Kim

机构信息

Department of Chromosome Biology, Max F. Perutz Laboratories, University of Vienna, Dr Bohr-Gasse 1, 1030 Vienna, Austria.

出版信息

Nat Protoc. 2007;2(5):1145-51. doi: 10.1038/nprot.2007.172.

Abstract

Tandem affinity purification (TAP) is a generic two-step affinity purification protocol for isolation of TAP-tagged proteins together with associated proteins. We used bacterial artificial chromosome to heterologously express TAP-tagged murine Sgo1 protein in human HeLa cells. This allowed us to test the functionality of the Sgo1-TAP protein by RNA interference-mediated depletion of the endogenous human Sgo1. Here, we present an optimized protocol for purification of TAP-tagged Sgo1 protein as well as KIAA1387 from HeLa cells with detailed instructions. The purification protocol can be completed in 1 day and it should be applicable to other proteins.

摘要

串联亲和纯化(TAP)是一种通用的两步亲和纯化方案,用于分离带有TAP标签的蛋白质及其相关蛋白。我们使用细菌人工染色体在人HeLa细胞中异源表达带有TAP标签的小鼠Sgo1蛋白。这使我们能够通过RNA干扰介导的内源性人Sgo1缺失来测试Sgo1-TAP蛋白的功能。在此,我们提供了一种从HeLa细胞中纯化带有TAP标签的Sgo1蛋白以及KIAA1387的优化方案,并附有详细说明。该纯化方案可在1天内完成,且应适用于其他蛋白质。

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