Figure 1

The kynurenine pathway of tryptophan.
TDO = tryptophan 2,3-dioxygenase; IDO = indoleamine 2,3-dioxygenase; KAT = kynurenine aminotransferase; KMO = kynurenine 3-monooxygenase; NAD = nicotinamide adeninedinucleotide.
The kynurenine pathway of tryptophan.
TDO = tryptophan 2,3-dioxygenase; IDO = indoleamine 2,3-dioxygenase; KAT = kynurenine aminotransferase; KMO = kynurenine 3-monooxygenase; NAD = nicotinamide adeninedinucleotide.