About the Authors

Carl W. Carruthers Jr

CWCarruthers@tmhs.org

Affiliation Houston Methodist Research Institute, Department of Genomic Medicine, Houston, Texas, United States of America

Cory Gerdts

Affiliation Protein BioSolutions, Inc., Gaithersburg, Maryland, United States of America

Michael D. Johnson

Affiliation NanoRacks LLC, Houston, Texas, United States of America

Paul Webb

Affiliation Houston Methodist Research Institute, Department of Genomic Medicine, Houston, Texas, United States of America

Competing Interests

The authors have read the journal's policy and have the following possible conflicts: Gerdts is one of the inventors of the Plug Maker/Crystalcard system and is employed by Protein Biosolutions, Inc. (the company that sells the system); NanoRacks LLC has partnered with Protein Biosolutions, Inc. to provide this as a commercial method for microgravity protein crystal growth on the International Space Station. Equipment (CrystalCards™, filling of CrystalCards™, and NanoLab) and flight costs were provided by NanoRacks, LLC of Houston Texas. 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: CWC CG MJD. Performed the experiments: CWC CG. Analyzed the data: CWC PW. Contributed reagents/materials/analysis tools: CWC PW. Wrote the manuscript: CWC PW. Filling of the CrystalCards/programming of Plug Maker: CG. Design and creation of NanoLab: MDJ.