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Figure 3
A schematic presentation of the catalase molecule, with its reservoirs R1, R2 and R3 embedded in a matrix R4. Close and not-so-close protons are contained in reservoirs R1 and R2, respectively. Protons of catalase outside the magnetic diffusion barrier (extending between the dashed circles) are found in R3. The efficiency of the isotopic diffusion barrier (grey line) increases with the deuteration of the matrix.

IUCrJ
Volume 3| Part 5| September 2016| Pages 326-340
ISSN: 2052-2525
doi:10.1107/S205225251601054X