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. Author manuscript; available in PMC: 2010 Dec 16.
Published in final edited form as: J Am Chem Soc. 2009 Dec 16;131(49):17972–17979. doi: 10.1021/ja908170s

Figure 3.

Figure 3

Alpha proton chemical shift index (CSI) for PAP248–286 showing the disordered N-terminal end (CSI near zero) and the central and C-terminal helical regions (CSI <−0.1). The Ha chemical shift of K272 was not detected (red). The CSI was calculated by subtracting the Ha chemical shifts values measured for the peptide from the random coil shifts values for the respective amino acid reported in the literature.