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. Author manuscript; available in PMC: 2011 Dec 25.
Published in final edited form as: Methods Enzymol. 2010;482:167–183. doi: 10.1016/S0076-6879(10)82006-3

Fig. 7.

Fig. 7

The averaged power spectrum (a) from the 120 px (240 Å) long projections of the TMV model in Fig. 6a. The layer lines are numbered 1–6, where layer line 3 is at a spacing of 1/(23 Å) and arises from the 23 Å pitch 1-start helix of TMV. The n,l plot for TMV (b) shows that layer line 1 contains n=−16, layer line 2 contains n=17, etc.