Table 1. Classifications of polymorphic structures for hIAPP amyloid fibrils.

Class	Abbreviation	Ladder alignment	Hydrogen bond type in ladder	Zipper type
1	co-pho	co-aligned	parallel	homo
2	co-phe	co-aligned	parallel	hetero
3	aa-pho	anti-aligned	parallel	homo
4	aa-phe	anti-aligned	parallel	hetero
5	co-apho	co-aligned	anti-parallel	homo
6	co-aphe	co-aligned	anti-parallel	hetero
7	aa-apho	anti-aligned	anti-parallel	homo
8	aa-aphe	anti-aligned	anti-parallel	hetero