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. 2023 Sep 2;6:183. doi: 10.1038/s42004-023-00994-3

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Fig. 3 — The isonitrile substituent of 20-(R)-1 coordinates the heme iron (PDB entry 8FDA). CYP17A1 in cartoons from blue N-terminus to red C-terminus. Heme in black sticks with orange sphere for Fe. Ligand in violet sticks. Electron density (2F_o-F_c Polder map, 1 σ) in blue mesh for ligand and heme.