Helmholtz Association of German Research Centres - Institute of Stem Cell Research (ISF), University of Cambridge - MRC Laboratory of Molecular Biology, Helmholtz Association of German Research Centres - Institute of Stem Cell Research (ISF), Helmholtz Association of German Research Centres - Institute of Stem Cell Research (ISF), Helmholtz Association of German Research Centres - Institute of Stem Cell Research (ISF), Harvard University - Department of Stem Cell and Regenerative Biology, Helmholtz Association of German Research Centres - Institute of Stem Cell Research (ISF), Jožef Stefan Institute - Department of Biotechnology, Helmholtz Association of German Research Centres - Research Unit Protein Science (PROT), University of Zurich - Institute of Molecular Life Sciences, Harvard University - Department of Stem Cell and Regenerative Biology, National Institute of Chemistry Slovenia and Helmholtz Association of German Research Centres - Institute of Stem Cell Research (ISF)