Table 1. Crystalline structure and secondary structure content of recombinant spider silk fibres.

Sample	fc	fa	Crystallinity (%)	Lhkl (nm)			Secondary structure content (%)
				(200)	(120)	(002)	β-sheet	Amorphous & helix	β-turn
WS	—	—	16.4	—	3.2	2.2	27	55	18
WS-1x	—	—	15.8	—	3.3	2.0	34	48	18
WS-1x-h	—	—	19	3.4	3.3	1.7	36	43	21
WS-3x	0.59	0.02	18.0	4.0	3.3	1.6	37	39	24
WS-PSD	0.40	0.02	17.6	5.2	3.5	2.7	33	39	28
WS-PSD-3x	0.67	0.03	21.3	4.9	2.9	1.6	43	35	22