| Substance | Relationship Strength | Studies | Trials | Classes | Roles |
|---|
3-hydroxyanthranilic acid
3-Hydroxyanthranilic Acid: An oxidation product of tryptophan metabolism. It may be a free radical scavenger and a carcinogen.. 3-hydroxyanthranilic acid : An aminobenzoic acid that is benzoic acid substituted at C-2 by an amine group and at C-3 by a hydroxy group. It is an intermediate in the metabolism of the amino acid tryptophan.. 3-hydroxyanthranilate : A hydroxybenzoate that is the conjugate base of 3-hydroxyanthranilic acid. | 1.96 | 1 | 0 | aminobenzoic acid;
monohydroxybenzoic acid | human metabolite;
mouse metabolite |
3-hydroxykynurenine
3-hydroxykynurenine: RN given refers to cpd without isomeric designation. 3-hydroxykynurenine : A hydroxykynurenine that is kynurenine substituted by a hydroxy group at position 3.. hydroxykynurenine : A hydroxy-amino acid that is kynurenine substituted by a single hydroxy group at unspecified position. A "closed" class. | 1.96 | 1 | 0 | hydroxykynurenine | human metabolite |
kynurenine
Kynurenine: A metabolite of the essential amino acid tryptophan metabolized via the tryptophan-kynurenine pathway.. kynurenine : A ketone that is alanine in which one of the methyl hydrogens is substituted by a 2-aminobenzoyl group. | 1.96 | 1 | 0 | aromatic ketone;
non-proteinogenic alpha-amino acid;
substituted aniline | human metabolite |
niacin
Niacin: A water-soluble vitamin of the B complex occurring in various animal and plant tissues. It is required by the body for the formation of coenzymes NAD and NADP. It has PELLAGRA-curative, vasodilating, and antilipemic properties.. vitamin B3 : Any member of a group of vitamers that belong to the chemical structural class called pyridines that exhibit biological activity against vitamin B3 deficiency. Vitamin B3 deficiency causes a condition known as pellagra whose symptoms include depression, dermatitis and diarrhea. The vitamers include nicotinic acid and nicotinamide (and their ionized and salt forms).. nicotinic acid : A pyridinemonocarboxylic acid that is pyridine in which the hydrogen at position 3 is replaced by a carboxy group. | 1.96 | 1 | 0 | pyridine alkaloid;
pyridinemonocarboxylic acid;
vitamin B3 | antidote;
antilipemic drug;
EC 3.5.1.19 (nicotinamidase) inhibitor;
Escherichia coli metabolite;
human urinary metabolite;
metabolite;
mouse metabolite;
plant metabolite;
vasodilator agent |
pyridoxal
[no description available] | 1.96 | 1 | 0 | hydroxymethylpyridine;
methylpyridines;
monohydroxypyridine;
pyridinecarbaldehyde;
vitamin B6 | cofactor;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite |
pyridoxal phosphate
Pyridoxal Phosphate: This is the active form of VITAMIN B 6 serving as a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. During transamination of amino acids, pyridoxal phosphate is transiently converted into pyridoxamine phosphate (PYRIDOXAMINE).. pyridoxal 5'-phosphate : The monophosphate ester obtained by condensation of phosphoric acid with the primary hydroxy group of pyridoxal. | 1.96 | 1 | 0 | methylpyridines;
monohydroxypyridine;
pyridinecarbaldehyde;
vitamin B6 phosphate | coenzyme;
cofactor;
EC 2.7.7.7 (DNA-directed DNA polymerase) inhibitor;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite |
pyridoxine
4,5-bis(hydroxymethyl)-2-methylpyridin-3-ol: structure in first source. vitamin B6 : Any member of the group of pyridines that exhibit biological activity against vitamin B6 deficiency. Vitamin B6 deficiency is associated with microcytic anemia, electroencephalographic abnormalities, dermatitis with cheilosis (scaling on the lips and cracks at the corners of the mouth) and glossitis (swollen tongue), depression and confusion, and weakened immune function. Vitamin B6 consists of the vitamers pyridoxine, pyridoxal, and pyridoxamine and their respective 5'-phosphate esters (and includes their corresponding ionized and salt forms). | 1.96 | 1 | 0 | hydroxymethylpyridine;
methylpyridines;
monohydroxypyridine;
vitamin B6 | cofactor;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite |
kynurenic acid
Kynurenic Acid: A broad-spectrum excitatory amino acid antagonist used as a research tool.. kynurenic acid : A quinolinemonocarboxylic acid that is quinoline-2-carboxylic acid substituted by a hydroxy group at C-4. | 2.65 | 3 | 0 | monohydroxyquinoline;
quinolinemonocarboxylic acid | G-protein-coupled receptor agonist;
human metabolite;
neuroprotective agent;
nicotinic antagonist;
NMDA receptor antagonist;
Saccharomyces cerevisiae metabolite |
xanthurenic acid
xanthurenic acid : A quinolinemonocarboxylic acid that is quinoline-2-carboxylic acid substituted by hydroxy groups at C-4 and C-8. | 8.04 | 5 | 0 | dihydroxyquinoline;
quinolinemonocarboxylic acid | animal metabolite;
iron chelator;
metabotropic glutamate receptor agonist;
vesicular glutamate transport inhibitor |
tryptophan
Tryptophan: An essential amino acid that is necessary for normal growth in infants and for NITROGEN balance in adults. It is a precursor of INDOLE ALKALOIDS in plants. It is a precursor of SEROTONIN (hence its use as an antidepressant and sleep aid). It can be a precursor to NIACIN, albeit inefficiently, in mammals.. tryptophan : An alpha-amino acid that is alanine bearing an indol-3-yl substituent at position 3. | 2.87 | 4 | 0 | erythrose 4-phosphate/phosphoenolpyruvate family amino acid;
L-alpha-amino acid zwitterion;
L-alpha-amino acid;
proteinogenic amino acid;
tryptophan zwitterion;
tryptophan | antidepressant;
Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
plant metabolite;
Saccharomyces cerevisiae metabolite |
pyridoxic acid
Pyridoxic Acid: The catabolic product of most of VITAMIN B 6; (PYRIDOXINE; PYRIDOXAL; and PYRIDOXAMINE) which is excreted in the urine.. 4-pyridoxic acid : A methylpyridine that is 2-methylpyridine substituted by a hydroxy group at C-3, a carboxy group at C-4, and a hydroxymethyl group at C-5. It is the catabolic product of vitamin B6 and is excreted in the urine.. 4-pyridoxate : A pyridoxate that is the conjugate base of 4-pyridoxic acid, obtained by deprotonation of the carboxy group. | 1.96 | 1 | 0 | hydroxymethylpyridine;
methylpyridines;
monohydroxypyridine;
vitamin B6 | human urinary metabolite;
mouse metabolite |