Activating Compound | Comment | Organism | Structure |
---|---|---|---|
L-ascorbate | required | Homo sapiens | |
methylene blue | required | Homo sapiens |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | steadystate, pre-steady-state and stopped-flow kinetics | Homo sapiens |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Fe2+ | ferric heme | Homo sapiens |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
D-tryptophan + O2 | Homo sapiens | - |
N-formyl-D-kynurenine | - |
? | |
L-tryptophan + O2 | Homo sapiens | - |
N-formyl-L-kynurenine | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | P14902 | - |
- |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
L-tryptophan + O2 = N-formyl-L-kynurenine | electrophilic or radical addition reaction mechanism via formation of a transient ferryl intermediate, assigned as a Compound II (ferryl) species, during oxidation of L-Trp, 1-methyl-L-Trp, and a number of other substrate analogues, overview. A common reaction mechanism for indoleamine 2,3-dioxygenase-catalyzed oxidation of tryptophan and other tryptophan analogues is determined | Homo sapiens |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
1-methyl-L-tryptophan + O2 | - |
Homo sapiens | N-methyl-N-formyl-L-kynurenine | - |
? | |
5-fluoro-L-tryptophan + O2 | - |
Homo sapiens | 5-fluoro-N-formyl-L-kynurenine | - |
? | |
5-hydroxy-L-tryptophan + O2 | - |
Homo sapiens | 5-hydroxy-N-formyl-L-kynurenine | - |
? | |
5-methoxy-L-tryptophan + O2 | - |
Homo sapiens | 5-methoxy-N-formyl-L-kynurenine | - |
? | |
5-methyl-DL-tryptophan + O2 | - |
Homo sapiens | 5-methyl-N-formyl-DL-kynurenine | - |
? | |
beta-[3-benzo(b)thienyl]-L-alanine + O2 | - |
Homo sapiens | ? | - |
? | |
D-tryptophan + O2 | - |
Homo sapiens | N-formyl-D-kynurenine | - |
? | |
indole-3-propionic acid + O2 | altered kinetics for IPA (very long lag phase) as being consistent with a role for the ammonium group in stabilizing the ferric superoxide complex (via the radical pathway). The rate-limiting steps are different from the other substrates examined so that Compound II does not accumulate, but product formation is still possible, product formation ananlysis by LC-MS | Homo sapiens | ? | - |
? | |
L-tryptophan + O2 | - |
Homo sapiens | N-formyl-L-kynurenine | - |
? | |
additional information | formation of ferrous-oxy hIDO and comparison with the ternary complex, overview | Homo sapiens | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
hIDO | - |
Homo sapiens |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
25 | - |
assay at | Homo sapiens |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
8 | - |
assay at | Homo sapiens |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
heme | ferric heme | Homo sapiens |
General Information | Comment | Organism |
---|---|---|
metabolism | the initial and rate-limiting step of the kynurenine pathway involves oxidation of L-Trp toN-formylkynurenine. This is an O2-dependent process and catalyzed by indoleamine 2,3-dioxygenase and tryptophan 2,3-dioxygenase, EC 1.13.11.11 | Homo sapiens |