Thesis Title: Subtitle - NMR Spectroscopy Research Group
Thesis Title: Subtitle - NMR Spectroscopy Research Group
Thesis Title: Subtitle - NMR Spectroscopy Research Group
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42 Chapter 2. Possum: paramagnetically orchestrated spectral solver of unassigned methyls.<br />
Figure 2.5 PCS measurements in isopropyl groups of Val and Leu and use of PCS for<br />
stereospecific resonance assignments. (a) Selected spectral region from a 2D (H)C(C)H TOCSY<br />
spectrum (red) of cz- 186/ loaded with a 1:1 mixture of La 3+ and Yb 3+ , showing the methyl cross-<br />
peaks of Val96. The spectrum is overlaid with the 13 C-HSQC spectrum (blue). Intraresidual<br />
correlations between the cross-peaks of the 1CH3 and 2CH3 groups are identified by dotted lines.<br />
The TOCSY spectrum was recorded with 12 ms mixing time. (b) Same spectral region as in (a)<br />
taken from the 2D methyl Cz-EXSY spectrum of the same sample recorded with a mixing time of<br />
480 ms. (c) Selected strips from the 3D methyl CZ-EXSY spectrum of cz- 186/ loaded with a 1:1<br />
mixture of La 3+ and Dy 3+ (right panels) aligned with corresponding spectral regions from the 2D<br />
methyl CZ-EXSY spectrum (left panels). The strips display the methyl group correlations of Val10<br />
and Leu113. The arrows point from the chemical shifts of the diamagnetic auto-peaks (dd) to the<br />
chemical shifts of the exchange peaks (pd), indicating the 13 C PCS. Horizontal lines identify the