The Tandem Affinity Purification (TAP) Method: A General Procedure of Protein Complex Purification

doi:10.1006/meth.2001.1183

Methods

Volume 24, Issue 3, July 2001, Pages 218-229

https://doi.org/10.1006/meth.2001.1183 Get rights and content

Abstract

Identification of components present in biological complexes requires their purification to near homogeneity. Methods of purification vary from protein to protein, making it impossible to design a general purification strategy valid for all cases. We have developed the tandem affinity purification (TAP) method as a tool that allows rapid purification under native conditions of complexes, even when expressed at their natural level. Prior knowledge of complex composition or function is not required. The TAP method requires fusion of the TAP tag, either N- or C-terminally, to the target protein of interest. Starting from a relatively small number of cells, active macromolecular complexes can be isolated and used for multiple applications. Variations of the method to specifically purify complexes containing two given components or to subtract undesired complexes can easily be implemented. The TAP method was initially developed in yeast but can be successfully adapted to various organisms. Its simplicity, high yield, and wide applicability make the TAP method a very useful procedure for protein purification and proteome exploration.

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¹: These authors contributed equally to this manuscript.

²: To whom correspondence should be addressed at his present address at CGM-CNRS, Avenue de la Terrasse, F-91198 Gif sur Yvette, France. Fax: 33 1 69 82 38 77. E-mail: [email protected].

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Regular ArticleThe Tandem Affinity Purification (TAP) Method: A General Procedure of Protein Complex Purification

Abstract

Trends Biotechnol.

J. Biol. Chem.

Methods Enzymol.

Anal Biochem.

Methods Enzymol.

Virology

Nat. Genet.

Proc. Natl. Acad. Sci. USA

Nature

Proc. Natl. Acad. Sci. USA

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Nucleic Acids Res.

Regular Article
The Tandem Affinity Purification (TAP) Method: A General Procedure of Protein Complex Purification