Substance | Relationship Strength | Studies | Trials | Classes | Roles |
5-hydroxytryptophan 5-Hydroxytryptophan: The immediate precursor in the biosynthesis of SEROTONIN from tryptophan. It is used as an antiepileptic and antidepressant.. 5-hydroxytryptophan : A tryptophan derivative that is tryptophan substituted by a hydroxy group at position 5. | 1.99 | 1 | 0 | hydroxytryptophan | human metabolite; neurotransmitter |
3,3-dimethylallyl pyrophosphate 3,3-dimethylallyl pyrophosphate: isomeric with isopentenyl pyrophosphate. prenyl diphosphate : A prenol phosphate that is a phosphoantigen comprising the O-pyrophosphate of prenol. | 2.07 | 1 | 0 | prenol phosphate | epitope; Escherichia coli metabolite; mouse metabolite; phosphoantigen |
indole [no description available] | 2.07 | 1 | 0 | indole; polycyclic heteroarene | Escherichia coli metabolite |
guanidine Guanidine: A strong organic base existing primarily as guanidium ions at physiological pH. It is found in the urine as a normal product of protein metabolism. It is also used in laboratory research as a protein denaturant. (From Martindale, the Extra Pharmacopoeia, 30th ed and Merck Index, 12th ed) It is also used in the treatment of myasthenia and as a fluorescent probe in HPLC.. guanidine : An aminocarboxamidine, the parent compound of the guanidines. | 1.98 | 1 | 0 | carboxamidine; guanidines; one-carbon compound | |
p-fluorophenylalanine p-Fluorophenylalanine: 3-(p-Fluorophenyl)-alanine.. 4-fluorophenylalanine : A phenylalanine derivative in which the hydrogen at position 4 on the benzene ring is replaced by a fluoro group. | 2.41 | 2 | 0 | fluoroamino acid; monofluorobenzenes; non-proteinogenic alpha-amino acid; phenylalanine derivative | |
adenosine monophosphate Adenosine Monophosphate: Adenine nucleotide containing one phosphate group esterified to the sugar moiety in the 2'-, 3'-, or 5'-position. | 1.97 | 1 | 0 | adenosine 5'-phosphate; purine ribonucleoside 5'-monophosphate | adenosine A1 receptor agonist; cofactor; EC 3.1.3.1 (alkaline phosphatase) inhibitor; EC 3.1.3.11 (fructose-bisphosphatase) inhibitor; fundamental metabolite; micronutrient; nutraceutical |
phenylalanine Phenylalanine: An essential aromatic amino acid that is a precursor of MELANIN; DOPAMINE; noradrenalin (NOREPINEPHRINE), and THYROXINE.. L-phenylalanine : The L-enantiomer of phenylalanine.. phenylalanine : An aromatic amino acid that is alanine in which one of the methyl hydrogens is substituted by a phenyl group. | 1.98 | 1 | 0 | amino acid zwitterion; erythrose 4-phosphate/phosphoenolpyruvate family amino acid; L-alpha-amino acid; phenylalanine; proteinogenic amino acid | algal metabolite; EC 3.1.3.1 (alkaline phosphatase) inhibitor; Escherichia coli metabolite; human xenobiotic metabolite; micronutrient; mouse metabolite; nutraceutical; plant metabolite; Saccharomyces cerevisiae metabolite |
valine Valine: A branched-chain essential amino acid that has stimulant activity. It promotes muscle growth and tissue repair. It is a precursor in the penicillin biosynthetic pathway.. valine : A branched-chain amino acid that consists of glycine in which one of the hydrogens attached to the alpha-carbon is substituted by an isopropyl group.. L-valine : The L-enantiomer of valine. | 2.69 | 3 | 0 | L-alpha-amino acid zwitterion; L-alpha-amino acid; proteinogenic amino acid; pyruvate family amino acid; valine | algal metabolite; Escherichia coli metabolite; human metabolite; micronutrient; mouse metabolite; nutraceutical; Saccharomyces cerevisiae metabolite |
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. | 4.3 | 19 | 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 |
arginine Arginine: An essential amino acid that is physiologically active in the L-form.. arginine : An alpha-amino acid that is glycine in which the alpha-is substituted by a 3-guanidinopropyl group. | 2.01 | 1 | 0 | arginine; glutamine family amino acid; L-alpha-amino acid; proteinogenic amino acid | biomarker; Escherichia coli metabolite; micronutrient; mouse metabolite; nutraceutical |
2-fluorophenylalanine 2-fluorophenylalanine: p-fluorophenylalanine is a minor descriptor; RN given refers to cpd with unspecified isomeric designation. 2-fluoro-DL-phenylalanine : A racemate comprising equimolar amounts of 2-fluoro-L-phenylalanine and 2-fluoro-D-phenylalanine.. 2-fluorophenylalanine : A phenylalanine derivative in which the hydrogen at position 2 on the benzene ring is replaced by a fluoro group. | 1.98 | 1 | 0 | monofluorobenzenes; non-proteinogenic alpha-amino acid; phenylalanine derivative | |
5-fluorotryptophan 5-fluorotryptophan: RN given refers to cpd with unspecified isomeric designation. 5-fluorotryptophan : A non-proteinogenic alpha-amino acid that is tryptophan in which the hydrogen at position 5 on the indole ring is replaced by a fluoro group. | 2.9 | 4 | 0 | non-proteinogenic alpha-amino acid; organofluorine compound; tryptophan derivative | |
3-fluorophenylalanine 3-fluorophenylalanine: p-fluorophenylalanine is a minor descriptor; RN given refers cpd with unspecified isomeric designation | 1.98 | 1 | 0 | | |
fluorine Fluorine: A nonmetallic, diatomic gas that is a trace element and member of the halogen family. It is used in dentistry as fluoride (FLUORIDES) to prevent dental caries. | 2.39 | 2 | 0 | diatomic fluorine; gas molecular entity | NMR chemical shift reference compound |
1,5-i-aedans 1,5-I-AEDANS: fluorescent probes which are sulfhydryl reagents; combine reactivity of iodoacetamide toward sulfhydryl groups with spectral properties of naphthalenesulfonic acids; structure. 5-{[2-(iodoacetamido)ethyl]amino}naphthalene-1-sulfonic acid : An aminonaphthalenesulfonic acid fluorophore with a structure consisting of ethylenediamine substituted on the nitrogens with iodoacetyl and 5-sulfonyl-1-naphthyl groups. | 1.99 | 1 | 0 | aminonaphthalenesulfonic acid | fluorescent probe |
6-fluorotryptophan 6-fluorotryptophan: an inhibitor of serotonin synthesis; RN given refers to parent cpd without isomeric designation | 3.26 | 6 | 0 | indolyl carboxylic acid | |
cysteine Cysteine: A thiol-containing non-essential amino acid that is oxidized to form CYSTINE.. L-cysteinium : The L-enantiomer of cysteinium.. cysteine : A sulfur-containing amino acid that is propanoic acid with an amino group at position 2 and a sulfanyl group at position 3. | 2.46 | 2 | 0 | cysteinium | fundamental metabolite |
7-azatryptophan 7-azatryptophan: RN given refers to cpd without isomeric designation; structure | 1.99 | 1 | 0 | | |
anticodon Anticodon: The sequential set of three nucleotides in TRANSFER RNA that interacts with its complement in MESSENGER RNA, the CODON, during translation in the ribosome. | 2.01 | 1 | 0 | | |
muramidase Muramidase: A basic enzyme that is present in saliva, tears, egg white, and many animal fluids. It functions as an antibacterial agent. The enzyme catalyzes the hydrolysis of 1,4-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrin. EC 3.2.1.17. | 1.98 | 1 | 0 | | |