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Dimethylsulphoxide as a tool to increase functional expression of heterologously produced GPCRs in mammalian cells

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Shukla,  Arun Kumar
Department of Molecular Membrane Biology, Max Planck Institute of Biophysics, Max Planck Society;

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Reinhart,  Christoph
Department of Molecular Membrane Biology, Max Planck Institute of Biophysics, Max Planck Society;

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Michel,  Hartmut
Department of Molecular Membrane Biology, Max Planck Institute of Biophysics, Max Planck Society;

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Citation

Shukla, A. K., Reinhart, C., & Michel, H. (2006). Dimethylsulphoxide as a tool to increase functional expression of heterologously produced GPCRs in mammalian cells. FEBS Letters, 580(17), 4261-4265. doi:10.1016/j.febslet.2006.05.064.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0024-D9B8-C
Abstract
High-level overexpression of G protein-coupled receptors GPCRs in mammalian cells remains a difficult task inspite of newly developed virus based expression systems. Here, we show that the functional expression level of the recombinant bradykinin receptor (B2R) in mammalian cells can be increased up to sixfold just by the addition of dimethylsulphoxide in the culture medium. Total expression level, cellular localization and binding affinity of the recombinant receptor for its endogenous ligand remains unaltered. The strategy presented here, with recombinant B2R as a case example, is applicable to other GPCRs and provides a generic tool to improve the functional expression level of recombinant GPCRs in mammalian cells.