For proteomic analysis, protein purification from cell extracts is an important step. Since production of high quality antibody is time consuming and not guaranteed to be successful, expression of epitope-tag conjugated protein of interest followed by immunoprecipitation using anti-epitope-tag antibody is a common method for protein purification. Here we describe use of an epitope-tag called TAP (tandem affinity purification) in DT40, which consists of Protein A IgG-binding motif and calmodulin binding motif separated by TEV cleavage site. Tandem purification using two different epitopes should eliminate non-specific binding and help identifying physiological protein-protein associations.
|出版ステータス||出版済み - 1 1 2006|
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