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

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 tes...

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Бібліографічні деталі
Автори: Gregan, J, Riedel, C, Petronczki, M, Cipak, L, Rumpf, C, Poser, I, Buchholz, F, Mechtler, K, Nasmyth, K
Формат: Journal article
Мова:English
Опубліковано: 2007
Опис
Резюме: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.