1. Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
2. Joint BioEnergy Institute, Emeryville, California 94608, United States
3. Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. Department of Chemical and Biomolecular Engineering & Department of Bioengineering, University of California, Berkeley, California 94720, United States