About the Authors

Jan Kubicek

Affiliation QIAGEN GmbH, Hilden, Germany

Ramona Schlesinger

Current address: Experimental Physics: Genetic Biophysics, Free University Berlin, Germany

Affiliation Molecular Biophysics, Institute of Structural Biology and Biophysics (ISB-2), Research Center Jülich, Jülich, Germany

Christian Baeken

Affiliation Molecular Biophysics, Institute of Structural Biology and Biophysics (ISB-2), Research Center Jülich, Jülich, Germany

Georg Büldt

Affiliation Molecular Biophysics, Institute of Structural Biology and Biophysics (ISB-2), Research Center Jülich, Jülich, Germany

Frank Schäfer

Affiliation QIAGEN GmbH, Hilden, Germany

Jörg Labahn

j.labahn@fz-juelich.de

Affiliation Molecular Biophysics, Institute of Structural Biology and Biophysics (ISB-2), Research Center Jülich, Jülich, Germany

Competing Interests

The authors have read the journal's policy and have the following conflicts: JK and FS are employees of QIAGEN, which sells products for crystallization of membrane proteins. JK, GB, FS, and JL also declare competing interests in the form of a pending relevant PCT patent application, no. WO2010037510. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JK JL. Performed the experiments: JK JL. Analyzed the data: JK JL. Contributed reagents/materials/analysis tools: RS CB. Wrote the paper: JK JL FS. Contributed to the experimental concept: GB. Critically revised the article for important intellectual content: GB.