Compounds > tyrosylleucine
Page last updated: 2024-12-07

tyrosylleucine

Description Research Excerpts Clinical Trials Roles Classes Pathways Study Profile Bioassays Related Drugs Related Conditions Protein Interactions Research Growth Market Indicators

Tyrosylleucine is a dipeptide composed of the amino acids tyrosine and leucine. It is a naturally occurring compound found in various proteins and peptides. Research on tyrosylleucine focuses on its potential roles in biological processes and its potential applications in various fields.

**Synthesis:** Tyrosylleucine can be synthesized through various methods, including enzymatic synthesis using peptidases and chemical synthesis using coupling reactions.

**Effects:** Tyrosylleucine has been shown to possess several biological effects, including:

* **Antioxidant activity:** Tyrosylleucine exhibits antioxidant properties, which may contribute to its potential health benefits.
* **Neuroprotective effects:** Studies suggest that tyrosylleucine may protect neurons from damage caused by oxidative stress and other factors.
* **Modulation of inflammation:** Tyrosylleucine has been found to modulate inflammatory responses in certain cell types.

**Importance and Research:**

* **Food Science:** Tyrosylleucine is a component of various proteins found in food sources, such as dairy products and meat. Its presence and potential contribution to protein functionality and digestion are studied.
* **Biomedicine:** Research on tyrosylleucine focuses on its potential as a therapeutic agent in conditions like neurodegenerative diseases, cardiovascular disease, and cancer.
* **Cosmetics:** Tyrosylleucine is also being explored for its potential applications in cosmetics due to its antioxidant and anti-aging properties.

Tyrosylleucine continues to be an area of active research, with ongoing investigations aimed at elucidating its precise mechanisms of action, potential applications, and safety profile.'

Cross-References

ID SourceID
PubMed CID87071
CHEMBL ID55259
CHEBI ID75003
SCHEMBL ID9822809
MeSH IDM0099427

Synonyms (24)

Synonym
tyrosylleucine
CHEMBL55259
chebi:75003 ,
l-tyrosyl-l-leucine
17355-10-1
l-leucine, n-l-tyrosyl-
l-leucine, l-tyrosyl-
AKOS010420852
l-tyr-l-leu
tyrosyl-leucine
(s)-2-((s)-2-amino-3-(4-hydroxyphenyl)propanamido)-4-methylpentanoic acid
h-tyr-leu-oh
SCHEMBL9822809
mfcd00037194
Q27145059
DS-16492
DTXSID30938403
n-[2-amino-1-hydroxy-3-(4-hydroxyphenyl)propylidene]leucine
C73328
(2s)-2-[[(2s)-2-azaniumyl-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylpentanoate
HY-122794
A927246
CS-0089397
tyr-leu (tfa)
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Roles (1)

RoleDescription
metaboliteAny intermediate or product resulting from metabolism. The term 'metabolite' subsumes the classes commonly known as primary and secondary metabolites.
[role information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Drug Classes (1)

ClassDescription
dipeptideAny molecule that contains two amino-acid residues connected by peptide linkages.
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Bioassays (3)

Assay IDTitleYearJournalArticle
AID228722Bitter tasting threshold was expressed as log 1/T.1995Journal of medicinal chemistry, Jul-07, Volume: 38, Issue:14
Amino acid side chain descriptors for quantitative structure-activity relationship studies of peptide analogues.
AID233318Bitter threshold value1987Journal of medicinal chemistry, Oct, Volume: 30, Issue:10
Quantitative structure-activity relationships of the bitter thresholds of amino acids, peptides, and their derivatives.
AID26797Partition coefficient (logP)1987Journal of medicinal chemistry, Oct, Volume: 30, Issue:10
Quantitative structure-activity relationships of the bitter thresholds of amino acids, peptides, and their derivatives.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (11)

TimeframeStudies, This Drug (%)All Drugs %
pre-19902 (18.18)18.7374
1990's2 (18.18)18.2507
2000's1 (9.09)29.6817
2010's5 (45.45)24.3611
2020's1 (9.09)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 12.35

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be weak demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index12.35 (24.57)
Research Supply Index2.48 (2.92)
Research Growth Index4.83 (4.65)
Search Engine Demand Index0.00 (26.88)
Search Engine Supply Index0.00 (0.95)

This Compound (12.35)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials0 (0.00%)5.53%
Reviews0 (0.00%)6.00%
Case Studies0 (0.00%)4.05%
Observational0 (0.00%)0.25%
Other11 (100.00%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]
SubstanceRelationship StrengthStudiesTrialsClassesRoles
hippuric acid
hippuric acid: RN given refers to parent cpd; structure in Merck Index, 9th ed, #4591. N-benzoylglycine : An N-acylglycine in which the acyl group is specified as benzoyl.		1.9710N-acylglycinehuman blood serum metabolite;
uremic toxin
alanylalanine
alanylalanine: RN given refers to (DL)-isomer		1.9710dipeptide
alanine
[no description available]		1.9710alpha-amino acid;
amino acid zwitterion		fundamental metabolite
glycine
[no description available]		1.9710alpha-amino acid;
amino acid zwitterion;
proteinogenic amino acid;
serine family amino acid		EC 2.1.2.1 (glycine hydroxymethyltransferase) inhibitor;
fundamental metabolite;
hepatoprotective agent;
micronutrient;
neurotransmitter;
NMDA receptor agonist;
nutraceutical
4-aminobenzoic acid
4-Aminobenzoic Acid: An aminobenzoic acid isomer that combines with pteridine and GLUTAMIC ACID to form FOLIC ACID. The fact that 4-aminobenzoic acid absorbs light throughout the UVB range has also resulted in its use as an ingredient in SUNSCREENS.. 4-ammoniobenzoate : A zwitterion obtained by transfer of a proton from the carboxy to the amino group of 4-aminobenzoic acid.. 4-aminobenzoic acid : An aminobenzoic acid in which the amino group is para to the carboxy group.		1.9610aminobenzoic acid;
aromatic amino-acid zwitterion		allergen;
Escherichia coli metabolite;
plant metabolite
5,5-dimethyl-1-pyrroline-1-oxide
5,5-dimethyl-1-pyrroline-1-oxide: do not confuse with DMPO (4',5'-dihydroxy-7-methoxy-4-phenyl-5,2'-oxidocoumarin). 5,5-dimethyl-1-pyrroline N-oxide : A member of the class of 1-pyrroline nitrones (1-pyrroline N-oxides) resulting from the formal N-oxidation of 5,5-dimethyl-1-pyrroline. Used as a spin trap for the study of radicals formed by enzymatic acetaldehyde oxidation.		2.07101-pyrroline nitronesneuroprotective agent;
spin trapping reagent
n-acetylphenylalanine
N-acetylphenylalanine: RN given refers to (DL)-isomer. N-acetylphenylalanine : The N-acetyl derivative of phenylalanine.		1.9710N-acetyl-amino acid;
phenylalanine derivative		antidepressant;
metabolite
4-aminobenzoic acid
para-Aminobenzoates: Benzoic acids, salts, or esters that contain an amino group attached to carbon number 4 of the benzene ring structure.. 4-aminobenzoate : An aromatic amino-acid anion that is the conjugate base of 4-aminobenzoic acid.		1.9610aminobenzoate;
aromatic amino-acid anion		Escherichia coli metabolite;
plant metabolite;
Saccharomyces cerevisiae metabolite
cysteine
[no description available]		1.9710cysteine zwitterion;
cysteine;
L-alpha-amino acid;
proteinogenic amino acid;
serine family amino acid		EC 4.3.1.3 (histidine ammonia-lyase) inhibitor;
flour treatment agent;
human metabolite
serine
Serine: A non-essential amino acid occurring in natural form as the L-isomer. It is synthesized from GLYCINE or THREONINE. It is involved in the biosynthesis of PURINES; PYRIMIDINES; and other amino acids.. serine : An alpha-amino acid that is alanine substituted at position 3 by a hydroxy group.		1.9710L-alpha-amino acid;
proteinogenic amino acid;
serine family amino acid;
serine zwitterion;
serine		algal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite
aspartic acid
Aspartic Acid: One of the non-essential amino acids commonly occurring in the L-form. It is found in animals and plants, especially in sugar cane and sugar beets. It may be a neurotransmitter.. aspartic acid : An alpha-amino acid that consists of succinic acid bearing a single alpha-amino substituent. L-aspartic acid : The L-enantiomer of aspartic acid.		1.9710aspartate family amino acid;
aspartic acid;
L-alpha-amino acid;
proteinogenic amino acid		Escherichia coli metabolite;
mouse metabolite;
neurotransmitter
glutamine
Glutamine: A non-essential amino acid present abundantly throughout the body and is involved in many metabolic processes. It is synthesized from GLUTAMIC ACID and AMMONIA. It is the principal carrier of NITROGEN in the body and is an important energy source for many cells.. L-glutamine : An optically active form of glutamine having L-configuration.. glutamine : An alpha-amino acid that consists of butyric acid bearing an amino substituent at position 2 and a carbamoyl substituent at position 4.		1.9710amino acid zwitterion;
glutamine family amino acid;
glutamine;
L-alpha-amino acid;
polar amino acid zwitterion;
proteinogenic amino acid		EC 1.14.13.39 (nitric oxide synthase) inhibitor;
Escherichia coli metabolite;
human metabolite;
metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
Saccharomyces cerevisiae metabolite
lysine
Lysine: An essential amino acid. It is often added to animal feed.. lysine : A diamino acid that is caproic (hexanoic) acid bearing two amino substituents at positions 2 and 6.. L-lysine : An L-alpha-amino acid; the L-isomer of lysine.		1.9710aspartate family amino acid;
L-alpha-amino acid zwitterion;
L-alpha-amino acid;
lysine;
organic molecular entity;
proteinogenic amino acid		algal metabolite;
anticonvulsant;
Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
plant metabolite;
Saccharomyces cerevisiae metabolite
tyrosine
Tyrosine: A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin.. tyrosine : An alpha-amino acid that is phenylalanine bearing a hydroxy substituent at position 4 on the phenyl ring.		2.3720amino acid zwitterion;
erythrose 4-phosphate/phosphoenolpyruvate family amino acid;
L-alpha-amino acid;
proteinogenic amino acid;
tyrosine		EC 1.3.1.43 (arogenate dehydrogenase) inhibitor;
fundamental metabolite;
micronutrient;
nutraceutical
leucine
Leucine: An essential branched-chain amino acid important for hemoglobin formation.. leucine : A branched-chain amino acid that consists of glycine in which one of the hydrogens attached to the alpha-carbon is substituted by an isobutyl group.		1.9710amino acid zwitterion;
L-alpha-amino acid;
leucine;
proteinogenic amino acid;
pyruvate family amino acid		algal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
plant metabolite;
Saccharomyces cerevisiae metabolite
methionine
Methionine: A sulfur-containing essential L-amino acid that is important in many body functions.. methionine : A sulfur-containing amino acid that is butyric acid bearing an amino substituent at position 2 and a methylthio substituent at position 4.		1.9710aspartate family amino acid;
L-alpha-amino acid;
methionine zwitterion;
methionine;
proteinogenic amino acid		antidote to paracetamol poisoning;
human metabolite;
micronutrient;
mouse metabolite;
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.		1.9710amino 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
ornithine
Ornithine: An amino acid produced in the urea cycle by the splitting off of urea from arginine.. ornithine : An alpha-amino acid that is pentanoic acid bearing two amino substituents at positions 2 and 5.		1.9710non-proteinogenic L-alpha-amino acid;
ornithine		algal metabolite;
hepatoprotective agent;
mouse metabolite
asparagine
Asparagine: A non-essential amino acid that is involved in the metabolic control of cell functions in nerve and brain tissue. It is biosynthesized from ASPARTIC ACID and AMMONIA by asparagine synthetase. (From Concise Encyclopedia Biochemistry and Molecular Biology, 3rd ed). asparagine : An alpha-amino acid in which one of the hydrogens attached to the alpha-carbon of glycine is substituted by a 2-amino-2-oxoethyl group.		1.9710amino acid zwitterion;
asparagine;
aspartate family amino acid;
L-alpha-amino acid;
proteinogenic amino acid		Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
plant metabolite;
Saccharomyces cerevisiae metabolite
histidine
Histidine: An essential amino acid that is required for the production of HISTAMINE.. L-histidine : The L-enantiomer of the amino acid histidine.. histidine : An alpha-amino acid that is propanoic acid bearing an amino substituent at position 2 and a 1H-imidazol-4-yl group at position 3.		1.9710amino acid zwitterion;
histidine;
L-alpha-amino acid;
polar amino acid zwitterion;
proteinogenic amino acid		algal metabolite;
Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
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.		1.9710L-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
threonine
Threonine: An essential amino acid occurring naturally in the L-form, which is the active form. It is found in eggs, milk, gelatin, and other proteins.. threonine : An alpha-amino acid in which one of the hydrogens attached to the alpha-carbon of glycine is substituted by a 1-hydroxyethyl group.		1.9710amino acid zwitterion;
aspartate family amino acid;
L-alpha-amino acid;
proteinogenic amino acid;
threonine		algal metabolite;
Escherichia coli metabolite;
human metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
plant metabolite;
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.		1.9710erythrose 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.		1.9710arginine;
glutamine family amino acid;
L-alpha-amino acid;
proteinogenic amino acid		biomarker;
Escherichia coli metabolite;
micronutrient;
mouse metabolite;
nutraceutical
glycyl-glycyl-glycine
glycyl-glycyl-glycine : A tripeptide in which three glycine units are linked via peptide bonds in a linear sequence.		1.9710tripeptide zwitterion;
tripeptide
glycylglycine
[no description available]		2.3820dipeptide zwitterion;
dipeptide		human metabolite
norleucine
Norleucine: An unnatural amino acid that is used experimentally to study protein structure and function. It is structurally similar to METHIONINE, however it does not contain SULFUR.. L-norleucine : A non-proteinogenic L-alpha-amino acid comprising hexanoic acid carrying an amino group at C-2. It does not occur naturally.		1.97102-aminohexanoic acid;
L-alpha-amino acid zwitterion;
non-proteinogenic L-alpha-amino acid
glutamic acid
Glutamic Acid: A non-essential amino acid naturally occurring in the L-form. Glutamic acid is the most common excitatory neurotransmitter in the CENTRAL NERVOUS SYSTEM.. glutamic acid : An alpha-amino acid that is glutaric acid bearing a single amino substituent at position 2.		1.9710glutamic acid;
glutamine family amino acid;
L-alpha-amino acid;
proteinogenic amino acid		Escherichia coli metabolite;
ferroptosis inducer;
micronutrient;
mouse metabolite;
neurotransmitter;
nutraceutical
norvaline
norvaline: differs from valine in being 1 carbon longer instead of branched; RN given refers to (L)-isomer; structure. L-2-aminopentanoic acid : A 2-aminopentanoic acid that has S-configuration.		1.97102-aminopentanoic acid;
L-alpha-amino acid zwitterion		bacterial metabolite;
hypoglycemic agent;
neuroprotective agent
ethyl tyrosine ester
ethyl tyrosine ester: RN given refers to L-isomer. ethyl L-tyrosinate : An L-tyrosyl ester that is L-tyrosine in which the hydrogen of the carboxy group has been replaced by an ethyl group.		1.9710ethyl ester;
L-tyrosyl ester
leucyltyrosine
leucyltyrosine: RN given refers to L-Tyr,L-Leu-isomer; RN for cpd without isomeric designation not avail 4/93		2.9240dipeptidemetabolite
tyrosine methyl ester
tyrosine methyl ester: RN given refers to (L)-isomer. methyl L-tyrosinate : An L-tyrosyl ester that is the methyl ester of L-tyrosine.		1.9710L-tyrosyl ester;
methyl ester
leucyl-glycyl-glycine
leucyl-glycyl-glycine: RN given refers to (L-Leu)-isomer. Leu-Gly-Gly : A tripeptide composed of one L-leucine and two glycine residues joined in sequence.		1.9710tripeptidemetabolite
acetylleucine
[no description available]		1.9710L-leucine derivative;
N-acetyl-L-amino acid		metabolite
leucylleucine
Leu-Leu : A dipeptide formed from two L-leucine residues.		2.3820dipeptide;
L-aminoacyl-L-amino acid zwitterion		human metabolite;
Mycoplasma genitalium metabolite
phenylalanylleucine
phenylalanylleucine: RN given refers to (L)-isomer		2.3820dipeptide zwitterion;
dipeptide		plant metabolite
methyl tryptophan, (l-trp)-isomer
[no description available]		1.9710
leucyl-alanine
Leu-Ala : A dipeptide composed of L-leucine and L-alanine joined by a peptide linkage.		2.3820dipeptidemetabolite
tryptophan ethyl ester
tryptophan ethyl ester: RN given refers to (DL)-isomer		1.9710
leucyl-leucyl-leucine
leucyl-leucyl-leucine: RN given refers to (L-Leu-L-Leu-L-Leu)-isomer. Leu-Leu-Leu : A tripeptide formed from three L-leucine residues.		1.9710tripeptidemetabolite
Trp-Trp
tryptophyltryptophan: an antigelation agent. Trp-Trp : A dipeptide formed from two L-tryptophan residues.		2.3820dipeptideMycoplasma genitalium metabolite
glycyltryptophan
glycyltryptophan: RN given refers to (L)-isomer. Gly-Trp : A dipeptide formed from glycine and L-tryptophan residues.		2.3820dipeptidemetabolite
glycyltyrosine
Gly-Tyr : A dipeptide composed of glycine and L-tyrosine joined by a peptide linkage.		2.3820dipeptidemetabolite
glycylleucine
Gly-Leu : A dipeptide composed of glycine and L-leucine joined by a peptide linkage.		2.3820dipeptide zwitterion;
dipeptide		metabolite
histidine methyl ester
histidine methyl ester: RN given refers to (L)-isomer; structure given in first source. histidine methyl ester : An alpha-amino acid ester that is the methyl ester of histidine.		1.9710histidine derivative
alanyltyrosine
alanyltyrosine: tyrosine source; RN given refers to (L)-isomer. Ala-Tyr : A dipeptide composed of L-alanine and L-tyrosine joined by a peptide linkage.		1.9810dipeptidemetabolite
glycyl-l-phenylalanine
glycylphenylalanine: RN given refers to (DL)-isomer. Gly-Phe : A dipeptide formed from glycine and L-phenylalanine residues.		2.3820dipeptide zwitterion;
dipeptide		human metabolite;
metabolite
n-acetylphenylalanine ethyl ester
N-acetylphenylalanine ethyl ester: RN given refers to (L)-isomer		1.9710
alanylphenylalanine
alanylphenylalanine: RN given refers to (L-Ala-L-PheAla)-isomer		2.3820dipeptidemetabolite
glycyl-leucyl-tyrosine
glycyl-leucyl-tyrosine: structure given in first source		1.9710oligopeptide
tryptophylglycine
Trp-Gly : A dipeptide formed from L-tryptophan and glycine residues.		2.4220dipeptidemetabolite
glycylaspartic acid
glycylaspartic acid: RN given refers to (L)-isomer		1.9810dipeptidemetabolite
n-glycylglutamic acid
N-glycylglutamic acid: RN given refers to (L)-isomer. Gly-Glu : A dipeptide formed from glycyl and L-glutamic acid residues.		1.9810dipeptidemetabolite
histidylglycine
histidylglycine: RN given refers to all (L)-isomer. His-Gly : A dipeptide formed from L-histidine and glycine residues.		1.9810dipeptidemetabolite
valylvaline
valylvaline: RN given refers to (L)-isomer. Val-Val : A dipeptide formed from two L-valine residues.		2.3820dipeptideMycoplasma genitalium metabolite
proctolin
proctolin: neurotransmitter in arthropods or invertebrates		1.9810
glycylglutamine
glycylglutamine: inhibitory neuropeptide derived from beta-endorphin; RN given refers to (L)-isomer		1.9810dipeptide zwitterion;
dipeptide		metabolite;
protective agent
alanylglutamine
alanylglutamine: RN refers to (L-Glu)-isomer; dipeptiven is for parenteral use. Ala-Gln : A dipeptide formed from L-alanyl and L-glutamine residues.		2.0610dipeptide zwitterion;
dipeptide		metabolite
beta-lactorphin
beta-lactorphin: N1 in Chemline for beta-lactorphin is L-tyrosyl-L-leucyl-L-leucyl-L-phenylalaninamide (name in article is SY above, not an amide)		1.9910
proline
Proline: A non-essential amino acid that is synthesized from GLUTAMIC ACID. It is an essential component of COLLAGEN and is important for proper functioning of joints and tendons.. proline : An alpha-amino acid that is pyrrolidine bearing a carboxy substituent at position 2.		1.9710amino acid zwitterion;
glutamine family amino acid;
L-alpha-amino acid;
proline;
proteinogenic amino acid		algal metabolite;
compatible osmolytes;
Escherichia coli metabolite;
micronutrient;
mouse metabolite;
nutraceutical;
Saccharomyces cerevisiae metabolite
phenylalanylarginine
phenylalanylarginine: RN given refers to all (L)-isomer. Phe-Arg : A dipeptide composed of L-phenylalanine and L-arginine joined by a peptide linkage.		1.9810dipeptidemetabolite
n-benzoyltyrosine
N-benzoyltyrosine: RN given refers to (L)-isomer. N-benzoyl-L-tyrosine : An N-acyl-L-tyrosine that is L-tyrosine in which one of the hydrogens of the amino group has been replaced by a benzoyl group.		1.9610benzamides;
N-acyl-L-tyrosine
aspartylglycine
Asp-Gly : A dipeptide composed of L-aspartic acid and glycine joined by a peptide linkage.		1.9810dipeptidemetabolite
prolyl-tyrosine
prolyl-tyrosine: structure given in first source. Pro-Tyr : A dipeptide formed from L-proline and L-tyrosine residues.		2.730dipeptidemetabolite
n-valyltryptophan
N-valyltryptophan: RN given refers to (L)-isomer		1.9810peptide
prolylleucine
prolylleucine: RN given refers to (D-Leu-L-Pro)-isomer		2.2510
histidylleucine
His-Leu : A dipeptide formed from L-histidine and L-leucine residues.		1.9810dipeptide zwitterion;
dipeptide		metabolite
isoleucylvaline
isoleucylvaline: RN given refers to all (L)-isomer. Ile-Val : A dipeptide formed from L-isoleucine and L-valine residues.		2.3820dipeptidemetabolite
Phe-Tyr
Phe-Tyr : A dipeptide formed from L-phenylalanine and L-tyrosine residues.		2.3820dipeptidemetabolite
n-acetyltryptophan
N-acetyl-L-tryptophan : A N-acetyl-L-amino acid that is the N-acetyl derivative of L-tryptophan.		1.9710L-tryptophan derivative;
N-acetyl-L-amino acid		metabolite
n-benzoylalanine
N-benzoylalanine: RN given refers to parent cpd (L-Ala)-isomer. N-benzoylalanine : An N-acylamino acid that is the N-benzoyl derivative of alanine.. N-benzoyl-L-alanine : An N-acyl-L-alanine resulting from the formal condensation of L-alanine with the carboxy group of benzoic acid.		1.9710N-acyl-L-alanine;
N-benzoylalanine		metabolite
phenylalanine methyl ester
phenylalanine methyl ester: RN given refers to (L)-isomer. methyl L-phenylalaninate : An alpha-amino acid ester that is the methyl ester of L-phenylalanine.		1.9710alpha-amino acid ester;
L-phenylalanine derivative
n-glycylalanine
Gly-Ala : A dipeptide formed from glycine and L-alanine residues.		1.9810dipeptidemetabolite
glycylvaline
glycylvaline: RN given refers to (DL)-isomer		2.3820dipeptidehuman metabolite
glycylproline
Gly-Pro : A dipeptide consisting of L-proline having a glycyl residue attached to its alpha-amino group.		2.3820dipeptide zwitterion;
dipeptide		metabolite
glycyllysine
glycyllysine: RN given refers to (L)-isomer. Gly-Lys : A dipeptide formed from glycine and L-lysine residues.		1.9810dipeptidemetabolite
alanylalanine
L-alanyl-L-alanine : A dipeptide consisting of two L-alanine units joined by a peptide linkage.		1.9810dipeptide zwitterion;
dipeptide		Mycoplasma genitalium metabolite
alpha-aspartylalanine
alpha-aspartylalanine: found in pig brain. Asp-Ala : A dipeptide formed from L-alpha-aspartyl and L-valine residues.		1.9810dipeptidemetabolite
alanyltyrosine
Tyr-Ala : A dipeptide formed from L-tyrosine and L-alanine residues.		1.9810dipeptidemetabolite
prolylglycine
prolylglycine: RN given refers to (L)-isomer. L-prolylglycine : A dipeptide consisting of glycine having an L-prolyl group attached to its alpha-amino nitrogen.		2.3820dipeptide zwitterion;
dipeptide
bentiromide
bentiromide: chymotrypsin labile peptide used diagnostically as an index of exocrine pancreas function. bentiromide : The dipeptide obtained by condensation of N-benzoyl-L-tyrosine with 4-aminobenzoic acid. Used as a noninvasive screening test for exocrine pancreatic insufficiency and to monitor the adequacy of supplemental pancreatic therapy, it is given by mouth: the amount of 4-aminobenzoic acid and its metabolites excreted in the urine is taken as a measure of the chymotrypsin-secreting activity of the pancreas.		1.9610dipeptidediagnostic agent;
indicator;
reagent
phenylalanylglycine
phenylalanylglycine: RN given refers to (DL)-isomer. Phe-Gly : A dipeptide formed from L-phenylalanine and glycine residues.		2.3820dipeptidemetabolite
leucyl-phenylalanine
Leu-Phe : A dipeptide formed from L-leucine and L-phenylalanine residues.		2.3820dipeptidemetabolite
glutamylalanine
Glu-Ala : A dipeptide formed from L-alpha-glutamyl and L-alanine residues.		1.9810dipeptidemetabolite
glycyl-alanyl-leucine
glycyl-alanyl-leucine: RN given refers to all (L)-isomer; RN for cpd without isomeric designation not avail 9/91		1.9710peptide
glutaminyl-glycine
Gln-Gly : A dipeptide formed from L-glutamine and glycine residues.		1.9810dipeptidemetabolite
methionylglycine
methionylglycine: RN given refers to (L)-isomer. Met-Gly : A dipeptide formed from L-methionine and glycine residues.		1.9810dipeptidemetabolite
phenylalanylphenylalanine
Phe-Phe : A dipeptide formed from two L-phenylalanine residues.		2.3820dipeptide;
L-aminoacyl-L-amino acid zwitterion		human blood serum metabolite;
Mycoplasma genitalium metabolite
valylleucine
valylleucine: RN given refers to all L-isomer. Val-Leu : A dipeptide formed from L-valine and L-leucine residues.		2.3820dipeptidemetabolite
phenylalanyl-valine
Val-Phe : A dipeptide formed from L-valine and L-phenylalanine residues.		1.9810dipeptidemetabolite
alanylglycine
[no description available]		2.3820dipeptide zwitterion;
dipeptide		metabolite
valyltyrosine
valyltyrosine: from sardine muscle hydrolyzate. Val-Tyr : A dipeptide formed from L-valine and L-tyrosine residues.		1.9810dipeptidemetabolite
alpha-glutamyltryptophan
Trp-Glu : A dipeptide formed from L-tryptophan and L-glutamic acid residues.		2.3820dipeptidemetabolite
phenylalanylproline
Phe-Pro : A dipeptide formed from L-phenylalanine and L-proline residues.		1.9710dipeptidemetabolite
lysylglycine
lysylglycine: structure in first source. Lys-Gly : A dipeptide formed from L-lysine and glycine residues.		1.9810dipeptidemetabolite
glycylhistidine
glycylhistidine: RN given refers to (L)-isomer. Gly-His : A dipeptide composed of glycine and L-histidine joined by a peptide linkage.		1.9810dipeptide zwitterion;
dipeptide		metabolite
prolylisoleucine
prolylisoleucine: RN refers to (L)-isomer. Pro-Ile : A dipeptide formed from L-proline and L-isoleucine residues.		1.9710dipeptidemetabolite
isoleucyl-tyrosine
isoleucyl-tyrosine: a dipeptide with antihypertensive effect. Ile-Tyr : A dipeptide formed from L-isoleucine and L-tyrosine residues.		2.4420dipeptidemetabolite
prolylvaline
Val-Pro : A dipeptide formed from L-valine and L-proline residues.		1.9810dipeptidemetabolite
caseins
Caseins: A mixture of related phosphoproteins occurring in milk and cheese. The group is characterized as one of the most nutritive milk proteins, containing all of the common amino acids and rich in the essential ones.		1.9910
ConditionIndicatedRelationship StrengthStudiesTrials
Sensitivity and Specificity
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)		02.0610