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NMR analysis of MCoTI-II(C4A). (A) Compared are the αH chemical shifts of the oxidized form of MCoTI-II(C4A) containing two disulfide bonds (IIa) with the αH shifts of wild-type MCoTI-II. The similarity in the chemical shifts shows that the overall fold is maintained in IIa. The native disulfide bonds likely to be present in IIa are shown in (B). The cysteine residue mutated to an alanine, and the free cysteine are marked in (A) with arrows. To see this figure in color, go online.
