Target type: molecularfunction
Binding to a beta-2 adrenergic receptor. [GOC:mah, GOC:nln]
Beta-2 adrenergic receptor binding involves the interaction of epinephrine (adrenaline) or norepinephrine (noradrenaline) with the beta-2 adrenergic receptor (β2AR), a G protein-coupled receptor (GPCR) located on the cell membrane. This binding initiates a signaling cascade that ultimately leads to various physiological effects, including bronchodilation, vasodilation, and glycogenolysis. Here's a detailed breakdown of the molecular function:
1. **Ligand Binding:** Epinephrine or norepinephrine, acting as ligands, bind to the extracellular domain of the β2AR. This binding event induces a conformational change in the receptor, activating it.
2. **G Protein Coupling:** The activated β2AR interacts with a heterotrimeric G protein, specifically the Gs protein. This interaction causes the G protein to dissociate, releasing its α subunit, which is bound to GTP.
3. **Adenylate Cyclase Activation:** The activated α subunit of Gs protein binds to and activates adenylate cyclase, an enzyme responsible for converting ATP into cyclic AMP (cAMP).
4. **cAMP Production:** Adenylate cyclase catalyzes the production of cAMP, acting as a second messenger.
5. **Protein Kinase A Activation:** cAMP binds to and activates protein kinase A (PKA), a key enzyme in the signaling cascade.
6. **Downstream Signaling:** Activated PKA phosphorylates various downstream proteins, leading to a variety of cellular responses. These responses include:
- **Bronchodilation:** Relaxation of smooth muscle in the bronchioles, facilitating airflow.
- **Vasodilation:** Relaxation of smooth muscle in blood vessels, promoting blood flow.
- **Glycogenolysis:** Breakdown of glycogen into glucose in the liver and muscles, increasing blood glucose levels.
- **Increased Heart Rate and Contractility:** Stimulation of heart muscle cells, leading to an increased heart rate and force of contraction.
7. **Desensitization:** Following prolonged exposure to ligands, the β2AR undergoes desensitization, a process that reduces receptor sensitivity and signaling. This involves phosphorylation of the receptor by G protein-coupled receptor kinases (GRKs) and binding of β-arrestin proteins, which inhibit further signal transduction.
The β2AR binding and subsequent signaling cascade is tightly regulated, ensuring appropriate responses to physiological demands. Dysregulation of this pathway can contribute to various diseases, including asthma, chronic obstructive pulmonary disease (COPD), and cardiovascular disorders.'
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Protein | Definition | Taxonomy |
---|---|---|
Guanine nucleotide-binding protein G(s) subunit alpha isoforms XLas | A guanine nucleotide-binding protein G(s) subunit alpha (human), isoforms XLas-1, XLas-2, and XLas-3. [PRO:DAN, UniProtKB:Q5JWF2] | Homo sapiens (human) |
cAMP-specific 3',5'-cyclic phosphodiesterase 4D | A 3,5-cyclic-AMP phosphodiesterase 4D that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q08499] | Homo sapiens (human) |
Glutamate receptor 1 | A glutamate receptor 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P42261] | Homo sapiens (human) |
Na(+)/H(+) exchange regulatory cofactor NHE-RF1 | A Na(+)/H(+) exchange regulatory cofactor NHE-RF1 that is encoded in the genome of human. [PRO:CNA, UniProtKB:O14745] | Homo sapiens (human) |
Compound | Definition | Classes | Roles |
---|---|---|---|
aminolevulinic acid | 5-aminolevulinic acid : The simplest delta-amino acid in which the hydrogens at the gamma position are replaced by an oxo group. It is metabolised to protoporphyrin IX, a photoactive compound which accumulates in the skin. Used (in the form of the hydrochloride salt)in combination with blue light illumination for the treatment of minimally to moderately thick actinic keratosis of the face or scalp. Aminolevulinic Acid: A compound produced from succinyl-CoA and GLYCINE as an intermediate in heme synthesis. It is used as a PHOTOCHEMOTHERAPY for actinic KERATOSIS. | 4-oxo monocarboxylic acid; amino acid zwitterion; delta-amino acid | antineoplastic agent; dermatologic drug; Escherichia coli metabolite; human metabolite; mouse metabolite; photosensitizing agent; plant metabolite; prodrug; Saccharomyces cerevisiae metabolite |
5-aminovaleric acid | 5-aminopentanoic acid : A delta-amino acid comprising pentanoic acid with an amino substituent at C-5; a methylene homologue of gamma-aminobutyric acid (GABA) that is a weak GABA agonist. 5-aminovaleric acid: from red fox anal secretion; RN given refers to parent cpd | amino acid zwitterion; delta-amino acid; omega-amino fatty acid | human metabolite |
alanylalanine | alanylalanine: RN given refers to (DL)-isomer | dipeptide | |
alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid | alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid: An IBOTENIC ACID homolog and glutamate agonist. The compound is the defining agonist for the AMPA subtype of glutamate receptors (RECEPTORS, AMPA). It has been used as a radionuclide imaging agent but is more commonly used as an experimental tool in cell biological studies. | non-proteinogenic alpha-amino acid | |
theophylline | dimethylxanthine | adenosine receptor antagonist; anti-asthmatic drug; anti-inflammatory agent; bronchodilator agent; drug metabolite; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; fungal metabolite; human blood serum metabolite; immunomodulator; muscle relaxant; vasodilator agent | |
cilostamide | cilostamide: selective inhibitor of cyclic AMP phosphodiesterase & platelet aggregation; structure | quinolines | |
5,7-dimethoxycoumarin | 5,7-dimethoxycoumarin: has photobiological activity | coumarins | |
clioquinol | 5-chloro-7-iodoquinolin-8-ol : A monohydroxyquinoline that is quinolin-8-ol in which the hydrogens at positions 5 and 7 are replaced by chlorine and iodine, respectively. It has antibacterial and atifungal properties, and is used in creams for the treatment of skin infections. It has also been investigated as a chelator of copper and zinc ions for the possible treatment of Alzheimer's disease. Clioquinol: A potentially neurotoxic 8-hydroxyquinoline derivative long used as a topical anti-infective, intestinal antiamebic, and vaginal trichomonacide. The oral preparation has been shown to cause subacute myelo-optic neuropathy and has been banned worldwide. | monohydroxyquinoline; organochlorine compound; organoiodine compound | antibacterial agent; antifungal agent; antimicrobial agent; antineoplastic agent; antiprotozoal drug; chelator; copper chelator |
cyclothiazide | cyclothiazide : 3,4-Dihydro-2H-1,2,4-benzothiadiazine 1,1-dioxide substituted at positions 3, 5 and 6 by a 2-norbornen-5-yl group, chlorine, and a sulfonamide group, respectively. A thiazide diuretic, it has been used in the management of hypertension and oedema. cyclothiazide: inhibits the desensitization of AMPA-type receptors; structure | benzothiadiazine | antihypertensive agent; diuretic |
denbufylline | denbufylline: structure given in first source | oxopurine | |
dipyridamole | dipyridamole : A pyrimidopyrimidine that is 2,2',2'',2'''-(pyrimido[5,4-d]pyrimidine-2,6-diyldinitrilo)tetraethanol substituted by piperidin-1-yl groups at positions 4 and 8 respectively. A vasodilator agent, it inhibits the formation of blood clots. Dipyridamole: A phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells. Dipyridamole also potentiates the antiaggregating action of prostacyclin. (From AMA Drug Evaluations Annual, 1994, p752) | piperidines; pyrimidopyrimidine; tertiary amino compound; tetrol | adenosine phosphodiesterase inhibitor; EC 3.5.4.4 (adenosine deaminase) inhibitor; platelet aggregation inhibitor; vasodilator agent |
donepezil | 2-[(1-benzylpiperidin-4-yl)methyl]-5,6-dimethoxyindan-1-one : A member of the class of indanones that is 5,6-dimethoxyindan-1-one which is substituted at position 2 by an (N-benzylpiperidin-4-yl)methyl group. donepezil : A racemate comprising equimolar amounts of (R)- and (S)-donepezil. A centrally acting reversible acetylcholinesterase inhibitor, its main therapeutic use is in the treatment of Alzheimer's disease where it is used to increase cortical acetylcholine. Donepezil: An indan and piperidine derivative that acts as a selective and reversible inhibitor of ACETYLCHOLINESTERASE. Donepezil is highly selective for the central nervous system and is used in the management of mild to moderate DEMENTIA in ALZHEIMER DISEASE. | aromatic ether; indanones; piperidines; racemate | EC 3.1.1.7 (acetylcholinesterase) inhibitor; EC 3.1.1.8 (cholinesterase) inhibitor; nootropic agent |
9-(2-hydroxy-3-nonyl)adenine | 9-(2-hydroxy-3-nonyl)adenine: specific inhibitor of adenosine deaminase | ||
etazolate | etazolate : A pyrazolopyridine that is 1H-pyrazolo[3,4-b]pyridine which is substituted at positions 1, 4, and 5 by ethyl, 2-isopropylidenehydrazino, and ethoxycarbonyl groups, respectively. A phosphodiesterase IV inhibitor with antidepressant and anxiolytic properties. Etazolate: A potent phosphodiesterase inhibitor proposed as an antipsychotic agent. | ethyl ester; hydrazone; pyrazolopyridine | alpha-secretase activator; antidepressant; antipsychotic agent; anxiolytic drug; GABA agent; neuroprotective agent; phosphodiesterase IV inhibitor |
fluoxetine | fluoxetine : A racemate comprising equimolar amounts of (R)- and (S)-fluoxetine. A selective serotonin reuptake inhibitor (SSRI), it is used (generally as the hydrochloride salt) for the treatment of depression (and the depressive phase of bipolar disorder), bullimia nervosa, and obsessive-compulsive disorder. Fluoxetine: The first highly specific serotonin uptake inhibitor. It is used as an antidepressant and often has a more acceptable side-effects profile than traditional antidepressants. N-methyl-3-phenyl-3-[4-(trifluoromethyl)phenoxy]propan-1-amine : An aromatic ether consisting of 4-trifluoromethylphenol in which the hydrogen of the phenolic hydroxy group is replaced by a 3-(methylamino)-1-phenylpropyl group. | (trifluoromethyl)benzenes; aromatic ether; secondary amino compound | |
ibudilast | pyrazolopyridine | ||
amrinone | amrinone : A 3,4'-bipyridine substituted at positions 5 and 6 by an amino group and a keto function respectively. A pyridine phosphodiesterase 3 inhibitor, it is a drug that may improve the prognosis in patients with congestive heart failure. Amrinone: A positive inotropic cardiotonic (CARDIOTONIC AGENTS) with vasodilator properties, phosphodiesterase 3 inhibitory activity, and the ability to stimulate calcium ion influx into the cardiac cell. | bipyridines | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor |
1-methyl-3-isobutylxanthine | 1-Methyl-3-isobutylxanthine: A potent cyclic nucleotide phosphodiesterase inhibitor; due to this action, the compound increases cyclic AMP and cyclic GMP in tissue and thereby activates CYCLIC NUCLEOTIDE-REGULATED PROTEIN KINASES 3-isobutyl-1-methylxanthine : An oxopurine that is xanthine which is substituted at positions 1 and 3 by methyl and isobutyl groups, respectively. | 3-isobutyl-1-methylxanthine | |
losartan | losartan : A biphenylyltetrazole where a 1,1'-biphenyl group is attached at the 5-position and has an additional trisubstituted imidazol-1-ylmethyl group at the 4'-position Losartan: An antagonist of ANGIOTENSIN TYPE 1 RECEPTOR with antihypertensive activity due to the reduced pressor effect of ANGIOTENSIN II. | biphenylyltetrazole; imidazoles | angiotensin receptor antagonist; anti-arrhythmia drug; antihypertensive agent; endothelin receptor antagonist |
milrinone | bipyridines; nitrile; pyridone | cardiotonic drug; EC 3.1.4.17 (3',5'-cyclic-nucleotide phosphodiesterase) inhibitor; platelet aggregation inhibitor; vasodilator agent | |
nimodipine | nimodipine : A dihydropyridine that is 1,4-dihydropyridine which is substituted by methyl groups at positions 2 and 6, a (2-methoxyethoxy)carbonyl group at position 3, a m-nitrophenyl group at position 4, and an isopropoxycarbonyl group at position 5. An L-type calcium channel blocker, it acts particularly on cerebral circulation, and is used both orally and intravenously for the prevention and treatment of subarachnoid hemorrhage from ruptured intracranial aneurysm. Nimodipine: A calcium channel blockader with preferential cerebrovascular activity. It has marked cerebrovascular dilating effects and lowers blood pressure. | 2-methoxyethyl ester; C-nitro compound; dicarboxylic acids and O-substituted derivatives; diester; dihydropyridine; isopropyl ester | antihypertensive agent; calcium channel blocker; cardiovascular drug; vasodilator agent |
papaverine | papaverine : A benzylisoquinoline alkaloid that is isoquinoline substituted by methoxy groups at positions 6 and 7 and a 3,4-dimethoxybenzyl group at position 1. It has been isolated from Papaver somniferum. Papaverine: An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels. | benzylisoquinoline alkaloid; dimethoxybenzene; isoquinolines | antispasmodic drug; vasodilator agent |
pentoxifylline | oxopurine | ||
4-(3-butoxy-4-methoxybenzyl)-2-imidazolidinone | 4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone: Inhibitor of phosphodiesterases. | methoxybenzenes | |
rolipram | pyrrolidin-2-ones | antidepressant; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor | |
streptonigrin | pyridines; quinolone | antimicrobial agent; antineoplastic agent | |
thalidomide | 2-(2,6-dioxopiperidin-3-yl)-1H-isoindole-1,3(2H)-dione : A dicarboximide that is isoindole-1,3(2H)-dione in which the hydrogen attached to the nitrogen is substituted by a 2,6-dioxopiperidin-3-yl group. thalidomide : A racemate comprising equimolar amounts of R- and S-thalidomide. Thalidomide: A piperidinyl isoindole originally introduced as a non-barbiturate hypnotic, but withdrawn from the market due to teratogenic effects. It has been reintroduced and used for a number of immunological and inflammatory disorders. Thalidomide displays immunosuppressive and anti-angiogenic activity. It inhibits release of TUMOR NECROSIS FACTOR-ALPHA from monocytes, and modulates other cytokine action. | phthalimides; piperidones | |
tofisopam | tofisopam: structure; dextofisopam is the R-enantiomer of tofisopam & antidiarrheal | organic molecular entity | |
trequinsin | trequinsin: RN given refers to parent cpd; structure given in first source | pyridopyrimidine | |
zardaverine | zardaverine : A pyridazinone derivative in which pyridazin-3(2H)-one is substituted at C-6 with a 4-(difluoromethoxy)-3-methoxyphenyl group. It is a phosphodiesterase inhibitor, selective for PDE3 and 4. zardaverine: structure given in first source | organofluorine compound; pyridazinone | anti-asthmatic drug; bronchodilator agent; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; peripheral nervous system drug |
kainic acid | Kainic Acid: (2S-(2 alpha,3 beta,4 beta))-2-Carboxy-4-(1-methylethenyl)-3-pyrrolidineacetic acid. Ascaricide obtained from the red alga Digenea simplex. It is a potent excitatory amino acid agonist at some types of excitatory amino acid receptors and has been used to discriminate among receptor types. Like many excitatory amino acid agonists it can cause neurotoxicity and has been used experimentally for that purpose. | dicarboxylic acid; L-proline derivative; non-proteinogenic L-alpha-amino acid; pyrrolidinecarboxylic acid | antinematodal drug; excitatory amino acid agonist |
glycylglycine | dipeptide; dipeptide zwitterion | human metabolite | |
9-benzyladenine | |||
8-bromo cyclic adenosine monophosphate | 8-Br-cAMP : A 3',5'-cyclic purine nucleotide that is 3',5'-cyclic AMP bearing an additional bromo substituent at position 8 on the adenine ring. An activator of cyclic AMP-dependent protein kinase, but resistant to degradation by cyclic AMP phosphodiesterase. 8-Bromo Cyclic Adenosine Monophosphate: A long-acting derivative of cyclic AMP. It is an activator of cyclic AMP-dependent protein kinase, but resistant to degradation by cyclic AMP phosphodiesterase. | 3',5'-cyclic purine nucleotide; adenyl ribonucleotide; organobromine compound | antidepressant; protein kinase agonist |
glutamic acid | glutamic acid : An alpha-amino acid that is glutaric acid bearing a single amino substituent at position 2. 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; glutamine family amino acid; L-alpha-amino acid; proteinogenic amino acid | Escherichia coli metabolite; ferroptosis inducer; micronutrient; mouse metabolite; neurotransmitter; nutraceutical |
enoximone | Enoximone: A selective phosphodiesterase inhibitor with vasodilating and positive inotropic activity that does not cause changes in myocardial oxygen consumption. It is used in patients with CONGESTIVE HEART FAILURE. | aromatic ketone | |
imazodan | imazodan: RN & structure given in first source; | ||
tolafentrine | tolafentrine: a mixed-type phosphodiesterase (PDE) III/IV inhibitor | ||
selfotel | selfotel: a N-methyl-D-aspartate (NMDA) antagonist; used to treat stroke-induced impairment | non-proteinogenic alpha-amino acid | |
nitraquazone | nitraquazone: structure given in first source | ||
cipamfylline | cipamfylline: a PDE type-4 inhibitor | oxopurine | |
ethyl 3-amino-1h-pyrazole-4-carboxylate | ethyl 3-amino-1H-pyrazole-4-carboxylate: structure in first source | ||
leucyl-alanine | Leu-Ala : A dipeptide composed of L-leucine and L-alanine joined by a peptide linkage. | dipeptide | metabolite |
alanylproline | alanylproline: RN given refers to all (L)-isomer | dipeptide; dipeptide zwitterion | metabolite |
8-((4-chlorophenyl)thio)cyclic-3',5'-amp | 8-((4-chlorophenyl)thio)cyclic-3',5'-AMP: lowers cAMP in heart & fat cells; cAMP-dependent kinase inhibitor 8-(4-chlorophenylthio)-cAMP : A 3',5'-cyclic purine nucleotide that is 3',5'-cyclic AMP in which the hydrogen at position 2 on the purine fragment is replaced by a 4-chlorophenylthio group. | 3',5'-cyclic purine nucleotide; adenyl ribonucleotide; aryl sulfide; organochlorine compound | protein kinase agonist |
glycylleucine | Gly-Leu : A dipeptide composed of glycine and L-leucine joined by a peptide linkage. | dipeptide; dipeptide zwitterion | metabolite |
alanyltyrosine | Ala-Tyr : A dipeptide composed of L-alanine and L-tyrosine joined by a peptide linkage. alanyltyrosine: tyrosine source; RN given refers to (L)-isomer | dipeptide | metabolite |
glycylsarcosine | glycylsarcosine : A dipeptide obtained by formal condensation of the carboxy group of glycine with the amino group of sarcosine. | dipeptide; dipeptide zwitterion | |
8-thio-benzyl cyclic amp | 8-thio-benzyl cyclic AMP: RN given refers to parent cpd | ||
glycylaspartic acid | glycylaspartic acid: RN given refers to (L)-isomer | dipeptide | metabolite |
8-chloro-cyclic adenosine monophosphate | |||
histidinoalanine | histidinoalanine: cross-linking amino acid in calcified tissue collagen; RN given refers to (L)-isomer | dipeptide; dipeptide zwitterion | metabolite |
tadalafil | benzodioxoles; pyrazinopyridoindole | EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor; vasodilator agent | |
jstx-3 | JSTX-3: structure in first source | N-acyl-amino acid | |
4-phenylpyrrolidone-2 | |||
argiotoxin-636 | argiotoxin-636: from the venom of Argiope aurantia; blocks neuromuscular transmission in insects; structure in first source. | N-acyl-amino acid | |
2-amino-3-(3-(carboxymethoxy)-5-methylisoxazol-4-yl)propionic acid | 2-amino-3-(3-(carboxymethoxy)-5-methylisoxazol-4-yl)propionic acid: glutamate receptor antagonist; protects against kainic acid neurotoxicity in cultured cerebral cortex neurons | ||
5-fluorowillardiine | 3-(5-fluorouracil-1-yl)-L-alanine : An alanine derivative that is L-alanine bearing a 5-fluorouracil-1-yl substituent at position 3. A more potent and selective AMPA receptor agonist (at hGluR1 and hGluR2) than AMPA itself (Ki = 14.7, 25.1, and 1820 nM for hGluR1, hGluR2 and hGluR5 respectively). 5-fluorowillardiine: a glutamate agonist; RN given for (S)-isomer | L-alanine derivative; non-proteinogenic L-alpha-amino acid; organofluorine compound | AMPA receptor agonist |
gyki 53655 | GYKI 53655: an AMPA (alpha-amino-3-hydroxy-5-methylisoxazole-4-propionate) receptor antagonist | ||
ly 293558 | tezampanel: structure given in first source; an AMPA receptor antagonist | ||
cdp 840 | |||
alanylglutamic acid | alanylglutamic acid: RN given refers to (L)-isomer L-alanyl-L-glutamic acid : A dipeptide consisting of L-glutamic acid having an L-alanyl attached to its alpha-amino group | dipeptide | |
7-benzylamino-6-chloro-2-piperazino-4-pyrrolidinopteridine | 7-benzylamino-6-chloro-2-piperazino-4-pyrrolidinopteridine: inibits growth of B16 melanoma & MCF-7 mammary carcinoma cells | ||
9-(2-hydroxy-3-nonyl)adenine | (2R,3S)-EHNA : EHNA of absolute configuration 2R,3S. Selective inhibitor of cGMP-stimulated phosphodiesterase (PDE2) (IC50 = 0.8 - 4 mM). Also a potent inhibitor of adenosine deaminase. | EHNA | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; EC 3.5.4.4 (adenosine deaminase) inhibitor |
9-(2-hydroxy-3-nonyl)adenine | (2S,3R)-EHNA : EHNA of absolute configuration 2S,3R. | EHNA | |
cilomilast | methoxybenzenes | ||
prolyl-tyrosine | Pro-Tyr : A dipeptide formed from L-proline and L-tyrosine residues. prolyl-tyrosine: structure given in first source | dipeptide | metabolite |
rp 73401 | piclamilast : A monocarboxylic acid amide resulting from the formal condensation of the carboxy group of 3-(cyclopentyloxy)-4-methoxybenzoic acid with the primary amino group of 3,5-dichloropyridin-4-amine. piclamilast: an antiasthmatic agent and phosphodiesterase 4 inhibitor; structure in first source | aromatic ether; benzamides; chloropyridine; monocarboxylic acid amide | anti-asthmatic drug; anti-inflammatory agent; bronchodilator agent; phosphodiesterase IV inhibitor |
moracin c | benzofurans | ||
alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid | |||
(+)-rolipram | (+)-rolipram : The (S)-enantiomer of rolipram. | rolipram | |
n(6)-benzyl-cyclic adenosine 5'-monophosphate | |||
5-bromowillardiine | 5-bromowillardiine: acts as a kainate-like agonist on chick EAA receptors expressed in Xenopus oocytes; RN given refers to (S)-isomer; RN for cpd without isomeric designation not avail 5/91 | ||
moracin m | moracin M: has been isolated from Morus alba L.; structure in first source | benzofurans | |
prolylglutamic acid | Pro-Glu : A dipeptide formed from L-proline and L-glutamic acid residues. | dipeptide | metabolite |
cysteinylglycine | cysteinylglycine: RN given refers to (L)-isomer; RN for cpd without isomeric designation not in Chemlne 7/13/83 L-cysteinylglycine : A dipeptide consisting of glycine having an L-cysteinyl attached to its alpha-amino group. It is an intermediate metabolite in glutathione metabolism. | dipeptide; dipeptide zwitterion | Escherichia coli metabolite; human metabolite; Saccharomyces cerevisiae metabolite |
willardiine | 3-(uracil-1-yl)-L-alanine : The 3-(uracil-1-yl) derivative of L-alanine. willardiine: isolated from seeds of Acacia willariana; structure | amino acid zwitterion; L-alanine derivative; non-proteinogenic L-alpha-amino acid | |
cocaine | cocaine : A tropane alkaloid obtained from leaves of the South American shrub Erythroxylon coca. Cocaine: An alkaloid ester extracted from the leaves of plants including coca. It is a local anesthetic and vasoconstrictor and is clinically used for that purpose, particularly in the eye, ear, nose, and throat. It also has powerful central nervous system effects similar to the amphetamines and is a drug of abuse. Cocaine, like amphetamines, acts by multiple mechanisms on brain catecholaminergic neurons; the mechanism of its reinforcing effects is thought to involve inhibition of dopamine uptake. | benzoate ester; methyl ester; tertiary amino compound; tropane alkaloid | adrenergic uptake inhibitor; central nervous system stimulant; dopamine uptake inhibitor; environmental contaminant; local anaesthetic; mouse metabolite; plant metabolite; serotonin uptake inhibitor; sodium channel blocker; sympathomimetic agent; vasoconstrictor agent; xenobiotic |
(S)-ATPA | (S)-ATPA : A non-proteinogenic L-alpha-amino acid that is L-alanine in which one of the methyl hydrogens is replaced by a 5-tert-butyl-3-hydroxy-isooxazol-4-yl group. | isoxazoles; non-proteinogenic L-alpha-amino acid | metabolite |
rolipram | (-)-rolipram : The (R)-enantiomer of rolipram. | rolipram | |
mesopram | mesopram: a potent & selective type IV phosphodiesterase inhibitor | ||
roflumilast | aromatic ether; benzamides; chloropyridine; cyclopropanes; organofluorine compound | anti-asthmatic drug; phosphodiesterase IV inhibitor | |
aspartyl-aspartic acid | Asp-Asp : A dipeptide formed from two L-aspartic acid units. aspartyl-aspartic acid: do not confuse with cyclo(Asp-Asp) | dipeptide | Mycoplasma genitalium metabolite |
cyclic nucleotide phosphodiesterases, type 4 | |||
eggmanone | eggmanone: a phosphodiesterase-4 inhibitor; structure in first source | ||
4-bromohomoibotenic acid, (rs)-isomer | |||
3-(n,n-dimethylsulfonamido)-4-methyl-nitrobenzene | BRL-50481 : A C-nitro compound that is benzene substituted by N,N-dimethylaminosulfonyl, methyl and nitro groups at positions 1, 2 and 5, respectively. It is a phosphodiesterase inhibitor selective for the PDE7 subtype (Ki = 180 nM). | C-nitro compound; sulfonamide; toluenes | bone density conservation agent; EC 3.1.4.53 (3',5'-cyclic-AMP phosphodiesterase) inhibitor; geroprotector |
glycylproline | Gly-Pro : A dipeptide consisting of L-proline having a glycyl residue attached to its alpha-amino group. | dipeptide; dipeptide zwitterion | metabolite |
4,5-dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2h)-pyridazinone | 4,5-dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2H)-pyridazinone: RN & structure given in first source | ||
tetomilast | |||
2,3-dioxo-6-nitro-7-sulfamoylbenzo(f)quinoxaline | 2,3-dioxo-6-nitro-7-sulfamoylbenzo(f)quinoxaline: structure given in first source; neuroprotectant for cerebral ischemia; AMPA receptor antagonist | naphthalenes; sulfonic acid derivative | |
fh535 | FH535: inhibits Wnt signaling | sulfonamide | |
6-cyano-7-nitroquinoxaline-2,3-dione | 6-Cyano-7-nitroquinoxaline-2,3-dione: A potent excitatory amino acid antagonist with a preference for non-NMDA iontropic receptors. It is used primarily as a research tool. | quinoxaline derivative | |
fg 9041 | FG 9041: structure given in first source | quinoxaline derivative | |
seryl-proline | Ser-Pro : A dipeptide formed from L-serine and L-proline residues. | dipeptide | metabolite |
mangostin | alpha-mangostin : A member of the class of xanthones that is 9H-xanthene substituted by hydroxy group at positions 1, 3 and 6, a methoxy group at position 7, an oxo group at position 9 and prenyl groups at positions 2 and 8. Isolated from the stems of Cratoxylum cochinchinense, it exhibits antioxidant, antimicrobial and antitumour activities. mangostin: xanthone from rind of Garcinia mangostana Linn. fruit | aromatic ether; phenols; xanthones | antimicrobial agent; antineoplastic agent; antioxidant; plant metabolite |
morusin | morusin : An extended flavonoid that is flavone substituted by hydroxy groups at positions 5, 2' and 4', a prenyl group at position 3 and a 2,2-dimethyl pyran group across positions 7 and 8. morusin: from Morus root bark; structure given in first source | extended flavonoid; trihydroxyflavone | antineoplastic agent; plant metabolite |
indolidan | indolidan: structure given in first source | ||
cudraflavone c | cudraflavone C : A tetrahydroxyflavone that is flavone substituted by hydroxy groups at positions 5, 7, 2' and 4' and prenyl groups at positions 3 and 6. Isolated from Morus nigra, it exhibits antibacterial and cytotoxic activities. cudraflavone C: a tyrosinase inhibitor with antimicrobial activity; isolated from Artocarpus integer; structure in first source | tetrahydroxyflavone | antibacterial agent; antineoplastic agent; plant metabolite |
fosbretabulin | stilbenoid | ||
lofepramine hydrochloride | |||
phenylalanylalanine | Phe-Ala : A dipeptide formed from L-phenylalanine and L-alanine residues. phenylalanylalanine: RN given refers to (L)-isomer | dipeptide; dipeptide zwitterion | metabolite |
acetylalanylalanine | acetylalanylalanine: RN given refers to (D)-isomer | ||
alpha-aspartylalanine | alpha-aspartylalanine: found in pig brain Asp-Ala : A dipeptide formed from L-alpha-aspartyl and L-valine residues. | dipeptide | metabolite |
9-Hydroxycalabaxanthone | xanthones | ||
alanyltyrosine | Tyr-Ala : A dipeptide formed from L-tyrosine and L-alanine residues. | dipeptide | metabolite |
prolylglycine | L-prolylglycine : A dipeptide consisting of glycine having an L-prolyl group attached to its alpha-amino nitrogen. prolylglycine: RN given refers to (L)-isomer | dipeptide; dipeptide zwitterion | |
cx 614 | 2H,3H,6aH-pyrrolidino(2'',1''-3',2')1,3-oxazino(6',5'-5,4)benzo(e)1, 4-dioxan-10-one: an ampakine (AMPA receptor modulator); structure in first source | ||
glutamylalanine | Glu-Ala : A dipeptide formed from L-alpha-glutamyl and L-alanine residues. | dipeptide | metabolite |
phenylalanylphenylalanine | Phe-Phe : A dipeptide formed from two L-phenylalanine residues. | dipeptide; L-aminoacyl-L-amino acid zwitterion | human blood serum metabolite; Mycoplasma genitalium metabolite |
phenylalanyl-valine | Val-Phe : A dipeptide formed from L-valine and L-phenylalanine residues. | dipeptide | metabolite |
alanylglycine | dipeptide; dipeptide zwitterion | metabolite | |
valyltyrosine | Val-Tyr : A dipeptide formed from L-valine and L-tyrosine residues. valyltyrosine: from sardine muscle hydrolyzate | dipeptide | metabolite |
phenylalanylproline | Phe-Pro : A dipeptide formed from L-phenylalanine and L-proline residues. | dipeptide | metabolite |
glycylhistidine | Gly-His : A dipeptide composed of glycine and L-histidine joined by a peptide linkage. glycylhistidine: RN given refers to (L)-isomer | dipeptide; dipeptide zwitterion | metabolite |
prolyl-serine | Pro-Ser : A dipeptide formed from L-proline and L-serine residues. | dipeptide | metabolite |
sch 351591 | SCH 351591: a phosphodiesterase 4 inhibitor; structure in first source SCH-351591 : An aromatic amide resulting from the formal condensation of the carboxy group of 8-methoxy-2-(trifluoromethyl)quinoline-5-carboxylic acid with the primary amino group of 3,5-dichloropyridin-4-amine 1-oxide. It is a potent inhibitor of phosphodiesterase IV (PDE4). | ||
rs 14203 | RS 14203: a type IV cyclic nucleotide phosphodiesterase inhibitor; structure in first source | ||
gsk 256066 | |||
prolylvaline | Val-Pro : A dipeptide formed from L-valine and L-proline residues. | dipeptide | metabolite |
tqx 173 | |||
ci 1044 | CI 1044: inhibits PDE4; structure in first source | ||
l-454,560 | L-454,560: Phosphodiesterase Inhibitor; structure in first source | ||
t 1032 | T 1032: a cyclic GMP phosphodiesterase-5 inhibitor; structure in first source | ||
l-826,141 | L-826,141: structure in first source | ||
ym-254890 | YM-254890: structure in first source | ||
perampanel | perampanel : A member of the class of bipyridines that is 2,3'-bipyridin-6'-one substituted at positions 1' and 5' by phenyl and 2-cyanophenyl groups respectively. Used as an adjunctive therapy for the treatment of partial-onset seizures in patients with epilepsy. | bipyridines; nitrile; pyridone | AMPA receptor antagonist; anticonvulsant |
ly 404187 | LY 404187: structure in first source | ||
4-n-butyl-1-(4-(2-methylphenyl)-4-oxo-1-butyl)-piperidine hydrogen chloride | |||
8-(methylthio)cyclic 3',5'-adenosine monophosphate | 8-(methylthio)cyclic 3',5'-adenosine monophosphate: structure | ||
licoflavone c | licoflavone C: Antimutagenic Agent; a naturally occurring prenyl-flavone extracted from Genista ephedroides; structure in first source | ||
oglemilast | oglemilast: a PDE4 inhibitor and NSAID; no further info available 1/2006 | ||
apremilast | aromatic ether; N-acetylarylamine; phthalimides; sulfone | non-steroidal anti-inflammatory drug; phosphodiesterase IV inhibitor | |
f-amidine | F-amidine: structure in first source | N-acylglycine | |
8-benzylthio-n(6)-n-butyladenosine cyclic-3,5'-monophosphate | 8-benzylthio-N(6)-n-butyladenosine cyclic-3,5'-monophosphate: may be useful as myocardial stimulant; structure given in first source | ||
lyoniside | lyoniside: see also eleutherosides & syringin for eleutheroside B: 118-34-3; RN given refers to (3beta)-isomer | ||
pf 04217903 | quinolines | ||
3-(2,5-dimethoxyphenyl)-6-(3,4-dimethoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
n-alpha-benzoyl-n5-(2-chloro-1-iminoethyl)-l-ornithine amide | benzenes | ||
nitd 609 | NITD 609: an antimalarial and coccidiostat; structure in first source | ||
an2728 | crisaborole : A member of the class of benzoxaboroles that is 5-hydroxy-1,3-dihydro-2,1-benzoxaborole in which the phenolic hydrogen has been replaced by a 4-cyanophenyl group. A phosphodiesterase 4 inhibitor that is used for treatment of mild to moderate atopic dermatitis in children and adults. crisaborole: NSAID, Dermatologic Agent; structure in first source | aromatic ether; benzoxaborole; nitrile | antipsoriatic; non-steroidal anti-inflammatory drug; phosphodiesterase IV inhibitor |
bms-911543 | N,N-dicyclopropyl-4-((1,5-dimethyl-1H-pyrazol-3-yl)amino)-6-ethyl-1-methyl-1,6-dihydroimidazo(4,5-d)pyrrolo(2,3b)pyridine-7-carboxamide: has antineoplastic activity; structure in first source | ||
d159687 | |||
chf6001 | tanimilast: a phosphodiesterase-4 inhibitor; structure in first source | ||
sildenafil | sildenafil : A pyrazolo[4,3-d]pyrimidin-7-one having a methyl substituent at the 1-position, a propyl substituent at the 3-position and a 2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl group at the 5-position. | piperazines; pyrazolopyrimidine; sulfonamide | EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor; vasodilator agent |
zaprinast | zaprinast: anaphylaxis inhibitor; structure | triazolopyrimidines | |
vardenafil | vardenafil : The sulfonamide resulting from formal condensation of the sulfo group of 4-ethoxy-3-(5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one-2-yl)benzenesulfonic acid and the secondary amino group of 4-ethylpiperazine. | imidazotriazine; N-alkylpiperazine; N-sulfonylpiperazine | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; vasodilator agent |
Imidazosagatriazinone | pyrazolopyrimidine | ||
pelrinone | pelrinone: structure given in first source | ||
lixazinone | lixazinone: structure given in first source |