Table 1.

Peaks of the diffraction vector q of the α-chitin fibre diffraction pattern of the attachment hairs and reference values.

reflection peak	020 (nm−1)	110 (nm−1)	001 (nm−1)	012 (nm−1)	013 (nm−1)	004 (nm−1)
shafta	5.90 ± 0.02	13.57 ± 0.01	6.23 ± 0.01	12.35 ± 0.01	18.63 ± 0.01	24.52 ± 0.01
tip regionb	6.39 ± 0.23	13.78 ± 0.15	—	12.32 ± 0.07	18.59 ± 0.04	24.52 ± 0.08
lobster tendonc [43]	6.62	13.54	6.14	12.27	18.59	24.54
crab tendonc [52]	6.65	13.68		12.57	18.51	24.35

^aFresh sample (data from beamtime at the ESRF); values from average diffraction pattern based on 1853 single diffraction patterns ± error of the fit (N = 1).

^bPreviously frozen sample (data from beamtime at PETRA III); number of diffraction patterns n used for calculation of the mean values ± standard deviations (s.d.): 020: n = 17, 110: n = 38, 012: n = 41, 013: n = 41, 004: n = 22 (N = 1).

^cDeproteinized.