About the Authors

Feifan Yu

Affiliation Division of Molecular Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Center, Stockholm, Sweden

Peter Järver

Current address: PNAC Division, MRC Laboratory of Molecular Biology, Cambridge, United Kingdom

Affiliation Division of Molecular Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Center, Stockholm, Sweden

Per-Åke Nygren

perake@biotech.kth.se

Affiliation Division of Molecular Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Center, Stockholm, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FY PJ PÅN. Performed the experiments: FY PJ. No. Analyzed the data: FY PJ PÅN. Contributed reagents/materials/analysis tools: FY PJ. Wrote the paper: FY PÅN.