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NMR spectral analysis of the K2Pg/VEK-30 complex. (A). 2D 1H-15N HSQC spectra of 15N-labeled K2Pg bound to unlabeled VEK-30. (B). 15N-labeled VEK-30 bound to unlabeled K2Pg. Sequence-specific assignments are indicated and peaks corresponding to the NH2 groups of the side-chain amides of Gln and Asn residues are connected by lines.
