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![[Figure 4]](qt5005fig4mag.jpg)
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Figure 4
The active site of the heme centre of ascorbate peroxidase (APX). (a) Compound II of APX with a positively charged His42 (PDB entry 5jpr, H/D exchanged; Kwon et al., 2016  ). 2Fo − Fc NSLD map (σ = 1.50) is displayed as a blue mesh; H and D atoms are displayed in white and turquoise, respectively. (b) A neutral Arg38 residue in ascorbate-bound APX (PDB entry 6xv4, perdeuterated; Kwon et al., 2020). 2Fo − Fc NSLD map (σ = 1.00) is displayed as a blue mesh; H and D atoms are displayed in white and turquoise, respectively. |
![[Figure 4]](qt5005fig4.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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