indoleamine 2,3-dioxygenase 1

Target entity: indoleamine 2,3-dioxygenase 1
Context triple: [kynurenine pathway, rateLimitingEnzyme, indoleamine 2,3-dioxygenase 1]

• A. indoleamine 2,3-dioxygenase 2
  Indoleamine 2,3-dioxygenase 2 is an immune-regulatory heme-containing enzyme that catalyzes the oxidative degradation of tryptophan along the kynurenine pathway, influencing inflammation and immune tolerance.
• B. tryptophan 2,3-dioxygenase
  Tryptophan 2,3-dioxygenase is a heme-containing enzyme that catalyzes the first and rate-limiting step in the oxidative degradation of tryptophan, playing a key role in tryptophan metabolism and regulation.
• C. kynurenine aminotransferase II
  Kynurenine aminotransferase II is a pyridoxal phosphate-dependent enzyme that converts kynurenine to kynurenic acid, a neuroactive metabolite implicated in brain function and neurodegenerative disorders.
• D. kynureninase
  Kynureninase is a pyridoxal phosphate-dependent enzyme that catalyzes key steps in tryptophan degradation within the kynurenine pathway, contributing to the production of NAD⁺ and other metabolites.
• E. aromatic L-amino acid decarboxylase
  Aromatic L-amino acid decarboxylase is a pyridoxal phosphate–dependent enzyme that catalyzes the decarboxylation of aromatic L-amino acids to produce key neurotransmitters such as dopamine and serotonin.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: indoleamine 2,3-dioxygenase 1
Target entity description: Indoleamine 2,3-dioxygenase 1 is an immune-regulatory enzyme that catalyzes the initial oxidative degradation of tryptophan along the kynurenine pathway, influencing inflammation, tolerance, and tumor immune evasion.

• A. indoleamine 2,3-dioxygenase 2
  Indoleamine 2,3-dioxygenase 2 is an immune-regulatory heme-containing enzyme that catalyzes the oxidative degradation of tryptophan along the kynurenine pathway, influencing inflammation and immune tolerance.
• B. tryptophan 2,3-dioxygenase
  Tryptophan 2,3-dioxygenase is a heme-containing enzyme that catalyzes the first and rate-limiting step in the oxidative degradation of tryptophan, playing a key role in tryptophan metabolism and regulation.
• C. kynurenine aminotransferase II
  Kynurenine aminotransferase II is a pyridoxal phosphate-dependent enzyme that converts kynurenine to kynurenic acid, a neuroactive metabolite implicated in brain function and neurodegenerative disorders.
• D. kynureninase
  Kynureninase is a pyridoxal phosphate-dependent enzyme that catalyzes key steps in tryptophan degradation within the kynurenine pathway, contributing to the production of NAD⁺ and other metabolites.
• E. aromatic L-amino acid decarboxylase
  Aromatic L-amino acid decarboxylase is a pyridoxal phosphate–dependent enzyme that catalyzes the decarboxylation of aromatic L-amino acids to produce key neurotransmitters such as dopamine and serotonin.
• F. None of above. chosen