Table 1. Assignment of WAXS peaks.

peak position	d (nm)	assignment	physical correlate	expected d (nm)
equatorial	0.461	2 0 0	inter-strand spacing in direction of H-bonds	0.472
near-equatorial	0.373	2 0 1	inter-strand spacing in direction of H-bonds; amino acid spacing in direction of peptide backbone	0.383
equatorial	0.373	2 2 0	inter-strand spacing in direction of H-bonds; inter-sheet spacing in direction of side-chains	0.3731

¹The expected d-spacing for the (2 2 0) peak is 0.373 nm when the inter-sheet spacing in the direction of amino acid side-chains is 1.27 nm.