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. Author manuscript; available in PMC: 2020 Aug 1.
Published in final edited form as: J Magn Reson. 2019 May 23;305:5–15. doi: 10.1016/j.jmr.2019.05.008

Figure 4.

Figure 4.

Overlay of REDOR-S0 (red) and REDOR-S (blue) and corresponding REDOR-filtered DARR spectra of U-13C,15N-MLF. (A) 1D REDOR spectra compare all 13C (REDOR-S0, red) with 13C remaining after dephasing of carbons with directly bonded 15N (REDOR-S, blue). (B) 2D REDOR-filtered 13C–13C DARR correlation spectra comparing REDOR-S0-DARR (red, all 13C-13C correlations) with REDOR-S-DARR (blue, correlations of carbons remaining after attenuation by dephasing of 13C directly bonded to 15N). Both 1D and 2D spectra show that Phe CO, which is not directly bonded to 15N, is retained completely, while Met CO and Leu CO are fully dephased. Spectra are at 14.1 T, with an MAS frequency of 11.11 kHz, REDOR dephasing time of 1.5 ms, and DARR mixing period of 20 ms.