1. Biomolecular Frontiers Research Centre, Department of Chemistry and Bimolecular Sciences, Faculty of Science, Macquarie University, Sydney, NSW, 2109, Australia, Protein Research Group, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark, and Protein Technology Department, Novozymes A/S, Krogshøjvej 36, 2880 Bagsværd, Denmark