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Methods. 2011 Feb;53(2):113-9. doi: 10.1016/j.ymeth.2010.09.003. Epub 2010 Sep 22.

Recombineering BAC transgenes for protein tagging.

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Genomics, BioInnovationsZentrum, Technische Universitaet Dresden, Am Tatzberg 47, 01307 Dresden, Germany.


Protein tagging offers many advantages for proteomic and regulomic research, particularly due to the use of generic and highly sensitive methods that can be applied with reasonable throughput. Ideally, protein tagging is equivalent to having a high affinity antibody for every chosen protein. However, these advantages are compromised if the tagged protein is overexpressed, which is usually the case from cDNA expression vectors. BAC (bacterial artificial chromosome) transgenes present a way to express a chosen protein at physiological levels with all regulatory elements in their native configurations, including cell cycle, alternative splicing and microRNA regulation. Recombineering has become the method of choice for modifying large constructs like BACs. Here, we present a method for protein tagging by recombineering BACs, transfecting cells and evaluating tagged protein expression.

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