About the Authors

Andrei N. Lupas

andrei.lupas@tuebingen.mpg.de

Affiliation Department of Protein Evolution, Max-Planck-Institute for Developmental Biology, Tuebingen, Germany

Hongbo Zhu

Affiliation Department of Protein Evolution, Max-Planck-Institute for Developmental Biology, Tuebingen, Germany

Mateusz Korycinski

Affiliation Department of Protein Evolution, Max-Planck-Institute for Developmental Biology, Tuebingen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ANL. Performed the experiments: ANL HZ MK. Analyzed the data: ANL HZ MK. Wrote the paper: ANL.