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. 2016 Sep 27;6:33951. doi: 10.1038/srep33951

Figure 1. The kynurenine pathway of tryptophan metabolism.

Figure 1

The key step of kynurenine conversion to 3-hydroxykynurenine via the action of the gate-keeper enzyme kynurenine 3-monooxygenase (KMO), is highlighted.