The peptide hormone glucagon forms amyloid fibrils with two coexisting ß-strand conformations.
Gelenter MD, Smith KJ, Liao SY, Mandala VS, Dregni AJ, Lamm MS, Tian Y, Xu W, Pochan DJ, Tucker TJ, Su Y, Hong M. The peptide hormone glucagon forms amyloid fibrils with two coexisting ß-strand conformations. Nat Struct Mol Biol. 2019 Jul; 26(7):592-598.