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. Author manuscript; available in PMC: 2010 Nov 1.
Published in final edited form as: J Biomol NMR. 2009 Jul 31;45(3):245–253. doi: 10.1007/s10858-009-9358-3

Fig. 4.

Fig. 4

(a) Comparison of the isotropic 15N chemical shielding from Model C vacuum (solid circles) and Model C CFP (open circles) calculations with experimental (solution NMR) data. Note that the E27 data in this plot represent the results from Model C extended to include K31. (b) Comparison of the isotropic 15N chemical shieldings for selected helical residues calculated using various models considered in this study