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Figure 3
NMR-based structural restraints commonly used in model refinement. (a) NOEs provide short-range interatomic distances, (b) PCSs give long-range distance and angular information of the metal–nucleus vectors relative to an external reference frame, and (c) RDCs provide angular information corresponding to vectors connecting two nuclei relative to the external reference frame. In cases where the alignment of the molecule arises from the presence of a paramagnetic centre, PCS and RDC restraints have the same reference frame.

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
Volume 74| Part 3| March 2018| Pages 215-227
https://doi.org/10.1107/S2059798318000979
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