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Putative substrate-binding mode and the heme-assisted homolytic scission. The substrate 13(S)-HPOD is shown as ball-and-stick models, and its oxygen atoms (i.e., the hydroperoxy and carboxyl groups) are shown in red. Residues Asn-276 and Lys-282 are labeled and shown in cyan as bond models. Heme iron is shown as a sphere model in green. The possible interactions are indicated by the dashed lines and approximate distances (Å).
