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. Author manuscript; available in PMC: 2010 Nov 17.
Published in final edited form as: Angew Chem Int Ed Engl. 2009;48(31):5708–5710. doi: 10.1002/anie.200901520

Figure 1.

Figure 1

(a) Band selective RFDR pulse sequence for two-dimensional homonuclear correlation spectroscopy. The recoupling π pulses occupy half or more of the rotor period, τr, and follow a 32-step phase scheme. (b) Long-range aliphatic correlation spectrum of 2-PI3-SH3 amyloid fibrils obtained with 17.92 ms of longitudinal mixing via BASE RFDR. The mixing time was optimized for 3.8 Å, typical internuclear distance of sequential Cα-Cα contacts. The spectrum was recorded in 27 hrs at 16.4 T magnetic field and 12.5 kHz MAS frequency, with 12.5 kHz 13C recoupling π pulses centered at 48 ppm.