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. Author manuscript; available in PMC: 2011 Jan 11.
Published in final edited form as: Biomacromolecules. 2010 Jan 11;11(1):192–200. doi: 10.1021/bm9010672

Figure 2.

Figure 2

13C-13C through-bond double quantum/single quantum (DQ/SQ) correlation collected with refocused INADEQUATE NMR experiments of N. clavipes Mi silk: (A) An initial cross polarization step was used to enhance carbon magnetization for the dry silk, while a direct carbon INADEQUATE was used for the water wetted silk (B & C). A recycle delay of (B) 1 s enhances mobile components that contain shorter T1 relaxation times, while a (C) 3 s recycle delay emphasizes rigid components. Carbonyl regions are blown up in insets to reveal two distinct CO resonances for Ala and Gly.