About the Authors

Michiel Stork

Current address: Intravacc, Bilthoven, Netherlands.

Affiliation Department of Molecular Microbiology and Institute of Biomembranes, Utrecht University, Utrecht, Netherlands

Jan Grijpstra

Affiliation Department of Molecular Microbiology and Institute of Biomembranes, Utrecht University, Utrecht, Netherlands

Martine P. Bos

Affiliation Department of Molecular Microbiology and Institute of Biomembranes, Utrecht University, Utrecht, Netherlands

Carmen Mañas Torres

Current address: Centro Nacional de Biotecnología, CSIC, Madrid, Spain.

Affiliation Department of Molecular Microbiology and Institute of Biomembranes, Utrecht University, Utrecht, Netherlands

Nathalie Devos

Affiliation GlaxoSmithKline Vaccines, Rixensart, Belgium

Jan T. Poolman

Current address: Crucell Holland B.V., Leiden, Netherlands.

Affiliation GlaxoSmithKline Vaccines, Rixensart, Belgium

Walter J. Chazin

Affiliation Department of Biochemistry and Chemistry and Center for Structural Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America

Jan Tommassen

j.p.m.tommassen@uu.nl

Affiliation Department of Molecular Microbiology and Institute of Biomembranes, Utrecht University, Utrecht, Netherlands

Competing Interests

I have read the journal's policy and have the following conflicts: Research in the lab of JT is funded by GlaxoSmithKline Biologicals SA. ND and JTP are, or were at the time of the study, employed by the GlaxoSmithKline group of companies. ND, JTP, and JT are named inventors on patents for which the rights have been assigned to the GlaxoSmithKline group of companies. This does not alter our adherence to all PLoS Pathogens policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MS JG MPB ND JTP WJC JT. Performed the experiments: MS JG MPB CMT. Analyzed the data: MS JG MPB JT. Contributed reagents/materials/analysis tools: WJC. Wrote the paper: JT.