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Hybrid CSA/dipolar recoupling experiment. (A) Pulse sequence and (B) its building blocks. (C) Chemical structures of test molecules with different molecular configurations mimicking the cis or trans peptide bond angle ω. (D) 2D CSA-dipolar correlation spectra for the two reference compounds representing the distinct ω angles. Panel (D) was adapted with permission from ref. (Mukhopadhyay et al., 2018).
