1. Spectroscopy of Soft Matter, University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany
2. School of Infection and Immunity, Glasgow University, Glasgow G12 8TA, U.K.
3. Laboratory of Anoxygenic Phototrophs, Institute of Microbiology, Czech Academy of Sciences, 379 81 Třeboň, Czech Republic
4. School of Biosciences, University of Sheffield, Sheffield S10 2TN, U.K.
5. School of Molecular Biosciences, Glasgow University, Glasgow G12 8QQ, U.K.
6. Bayreuth Institute for Macromolecular Research (BIMF), University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany
7. Bavarian Polymer Institute, University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany