About the Authors

Yanbin Ma

Affiliation Institute of Complex Systems (ICS-6), Research Center Jülich, Jülich, Germany

Jan Kubicek

Affiliations Institute of Complex Systems (ICS-6), Research Center Jülich, Jülich, Germany, QIAGEN GmbH, Hilden, Germany

Jörg Labahn

j.labahn @fz-juelich.de

Affiliation Institute of Complex Systems (ICS-6), Research Center Jülich, Jülich, Germany

Competing Interests

JK was an employee of QIAGEN, which sells products related to membrane proteins. JL and JK are co-inventors of a PCT patent application (number WO2010037510) by Research Center Jülich and Qiagen GmbH related to the crystallisation of membrane proteins. 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: YM JL. Performed the experiments: YM JK. Analyzed the data: YM JK JL. Contributed reagents/materials/analysis tools: YM JK JL. Wrote the paper: YM JL.