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Two-dimensional 1H-15N HSQC spectra for histidine imidazole of BcII in the presence of 2 m GdmCl. A, holoBcII. B, apoBcII. C, zinc/apoBcII molar ratio = 1. D, zinc/apoBcII molar ratio = 2. Note that standard BBL numbering system only is used.
