Aminoadipate aminotransferase.

2-amino-3-carboxymuconate-6-semialdehyde decarboxylase; Converts alpha-amino-beta-carboxymuconate-epsilon- semialdehyde (ACMS) to alpha-aminomuconate semialdehyde (AMS). Belongs to the metallo-dependent hydrolases superfamily.

Aminoadipate aminotransferase.

Kynurenine formamidase; Catalyzes the hydrolysis of N-formyl-L-kynurenine to L- kynurenine, the second step in the kynurenine pathway of tryptophan degradation. Kynurenine may be further oxidized to nicotinic acid, NAD(H) and NADP(H). Required for elimination of toxic metabolites.

Aminoadipate aminotransferase.

ALDH7A1 isoform 8; Belongs to the aldehyde dehydrogenase family.

Aminoadipate aminotransferase.

Dehydrogenase E1 and transketolase domain containing 1.

Aminoadipate aminotransferase.

Dihydrolipoyl dehydrogenase.

Aminoadipate aminotransferase.

3-hydroxyanthranilate 3,4-dioxygenase; Catalyzes the oxidative ring opening of 3-hydroxyanthranilate to 2-amino-3-carboxymuconate semialdehyde, which spontaneously cyclizes to quinolinate; Belongs to the 3-HAO family.

Aminoadipate aminotransferase.

IDO1 isoform 2.

Aminoadipate aminotransferase.

IDO2 isoform 4.

Aminoadipate aminotransferase.

Kynurenine 3-monooxygenase; Catalyzes the hydroxylation of L-kynurenine (L-Kyn) to form 3-hydroxy-L-kynurenine (L-3OHKyn). Required for synthesis of quinolinic acid, a neurotoxic NMDA receptor antagonist and potential endogenous inhibitor of NMDA receptor signaling in axonal targeting, synaptogenesis and apoptosis during brain development. Quinolinic acid may also affect NMDA receptor signaling in pancreatic beta cells, osteoblasts, myocardial cells, and the gastrointestinal tract.

Aminoadipate aminotransferase.

Kynurenine aminotransferase 1.

Aminoadipate aminotransferase.

Cysteine conjugate-beta lyase 2.

Aminoadipate aminotransferase.

Kynureninase; Catalyzes the cleavage of L-kynurenine (L-Kyn) and L-3- hydroxykynurenine (L-3OHKyn) into anthranilic acid (AA) and 3- hydroxyanthranilic acid (3-OHAA), respectively. Has a preference for the L-3-hydroxy form. Also has cysteine-conjugate-beta-lyase activity. Belongs to the kynureninase family.

Aminoadipate aminotransferase.

Tryptophan 2,3-dioxygenase; Heme-dependent dioxygenase that catalyzes the oxidative cleavage of the L-tryptophan (L-Trp) pyrrole ring and converts L- tryptophan to N-formyl-L-kynurenine. Catalyzes the oxidative cleavage of the indole moiety.

Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin (By similarity); Belongs to the acetyltransferase family. AANAT subfamily.

Dopa decarboxylase.

Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin (By similarity); Belongs to the acetyltransferase family. AANAT subfamily.

IDO1 isoform 2.

Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin (By similarity); Belongs to the acetyltransferase family. AANAT subfamily.

IDO2 isoform 4.

Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin (By similarity); Belongs to the acetyltransferase family. AANAT subfamily.

INMT-MINDY4 isoform 2.

Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin (By similarity); Belongs to the acetyltransferase family. AANAT subfamily.

Amine oxidase.

Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin (By similarity); Belongs to the acetyltransferase family. AANAT subfamily.

Amine oxidase.

Serotonin N-acetyltransferase; Controls the night/day rhythm of melatonin production in the pineal gland. Catalyzes the N-acetylation of serotonin into N- acetylserotonin, the penultimate step in the synthesis of melatonin (By similarity); Belongs to the acetyltransferase family. AANAT subfamily.

Tryptophan hydroxylase 1.