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. Author manuscript; available in PMC: 2014 Aug 15.
Published in final edited form as: J Am Chem Soc. 2013 Aug 6;135(32):10.1021/ja4046795. doi: 10.1021/ja4046795

Figure 10.

Figure 10

(a) Cartoon representation of the L-ShK toxin. The structure was solved as the racemate at 0.97 Å X-ray resolution by direct methods. The protein fold is shown as ribbons with three S-S bonds shown in stick mode. (b) Superposition of the NMR structure4 (PDB ID: 1ROO) of ShK toxin (in red) and the present L-enantiomer from the X-ray racemic crystal structure (in green); the selected NMR model (#10) displays the minimal Cα r.m.s. deviation of 1.8 Å.27 (c) Superposition of the L-ShK crystal structure (in blue) and L-ShK enantiomer structure from the DL-protein racemate (Green).