1 Part III. Polymorphism of protein misfolded and aggregated species 31. Structural basis for the polymorphism of β-lactoglobulin amyloid-like fibrils Corianne C. vandenAkker, 1 Michael Schleeger, 2 Mischa Bonn, 2 Gijsje H. Koenderink 1 1 FOM Institute AMOLF, Science Park 104, 1098 XG, Amsterdam, The Netherlands 2 Max Planck Institute for Polymer Research, Department of Molecular Spectroscopy, Ackermannweg 10, 55128 Mainz, Germany Corresponding author: Gijsje H. Koenderink g.koenderink@amolf.nl T: +31 20 754 7100 F: +31 20 754 7290 Running title: Structural basis for amyloid polymorphism