1. Department of Chemical EngineeringMassachusetts Institute of TechnologyCambridgeMassachusetts02139
2. Center for Industrial Biotechnology and Biocatalysis, Department for Biochemical and Microbial TechnologyGhent UniversityGhentBelgium
3. Beijing Key Laboratory of Bioprocess, College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijingP. R. China