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Figure 2
Proton NMR profile of tyrosyl-doped catalase before and after AFP. The efficiency of AFP is ɛ = 0.50. The sample was kept under a magnetic field of B = 2.5 T at a temperature of T = 0.5 K. Note that with both NMR and AFP methods, the RF field is swept across the NMR line, primarily affecting protons located outside the local field produced by paramagnetic impurities.

IUCrJ
Volume 12| Part 5| September 2025| Pages 570-581
ISSN: 2052-2525
https://doi.org/10.1107/S2052252525005871