Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark.|Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.|Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.|Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark.|Structural Biology and NMR Laboratory, Department of Biology, University of Copenhagen, Copenhagen, Denmark.