About the Authors

Samuel Ojosnegros

Current address: California Institute of Technology, Division of Biology, Pasadena, California, United States of America

Affiliation Centro de Biología Molecular “Severo Ochoa,” CSIC-UAM, Madrid, Spain

Juan García-Arriaza

Affiliations Centro de Biología Molecular “Severo Ochoa,” CSIC-UAM, Madrid, Spain, Centro Nacional de Biotecnología, CSIC, Madrid, Spain

Cristina Escarmís

Affiliation Centro de Biología Molecular “Severo Ochoa,” CSIC-UAM, Madrid, Spain

Susanna C. Manrubia

Affiliation Laboratorio de Evolución Molecular, Centro de Astrobiología (CSIC/INTA), Instituto Nacional de Técnica Aeroespacial, Madrid, Spain

Celia Perales

Affiliation Centro de Biología Molecular “Severo Ochoa,” CSIC-UAM, Madrid, Spain

Armando Arias

Current address: Department of Virology, Imperial College London, London, United Kingdom

Affiliation Centro de Biología Molecular “Severo Ochoa,” CSIC-UAM, Madrid, Spain

Mauricio García Mateu

Affiliation Centro de Biología Molecular “Severo Ochoa,” CSIC-UAM, Madrid, Spain

Esteban Domingo

edomingo@cbm.uam.es

Affiliations Centro de Biología Molecular “Severo Ochoa,” CSIC-UAM, Madrid, Spain, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SO CE SCM ED. Performed the experiments: SO CP MGM. Analyzed the data: SO JGA CE SCM CP MGM ED. Contributed reagents/materials/analysis tools: JGA AA. Wrote the paper: SO SCM MGM ED.