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. Author manuscript; available in PMC: 2017 Jun 10.
Published in final edited form as: J Neurochem. 2016 Jan 13;136(4):804–814. doi: 10.1111/jnc.13455

Figure 1.

Figure 1

Enzymatic degradation of D-TRP and L-TRP in vivo. The schematic diagram illustrates enzymatic processes involved in the degradation of L-TRP and D-TRP in mice under physiological conditions. IDO: indoleamine-2,3-dioxygenase; TDO: tryptophan-2,3-dioxygenase; D-AAO: D-amino acid oxidase; KAT: kynurenine aminotransferase; L:TRP: L-tryptophan; D-TRP: D-tryptophan; L-KYN: L-kynurenine; D-KYN: D-kynurenine; KYNA: kynurenic acid, 3-HK: 3-hydroxykynurenine; QUIN: quinolinic acid; KMO: kynurenine 3-monooxygenase.