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. Author manuscript; available in PMC: 2014 Apr 24.
Published in final edited form as: J Am Chem Soc. 2013 Apr 15;135(16):6014–6017. doi: 10.1021/ja402187t

Figure 4.

Figure 4

(A) NH-NH inter-chain NOE expected based on the crystal structure of (PPG)10 collagen triple helix30 (PDB code: 1K6F). (B) 1H,1H-NOESY spectrum of a mixture of (PKG)10, (EPG)10 and (DKG)10 showing the NH-NH NOE cross peaks. G(NH)-G(NH) correlations are indicated in black and red. The GDKG(NH)-GPKG(NH) correlation shown in orange/dashed could not be definitively assigned due to spectral overlap. (C) Model of the ABC heterotrimer composed of (PKG)10, (EPG)10 and (DKG)10 chains indicating observed NH-NH inter-chain correlations.