Target type: biologicalprocess
Any process that activates or increases the activity of the enzyme phospholipase A2. [GOC:mah]
Positive regulation of phospholipase A2 activity is a crucial biological process that plays a key role in various cellular functions, including inflammation, signal transduction, and lipid metabolism. Phospholipase A2 (PLA2) is a family of enzymes that hydrolyze phospholipids, specifically at the sn-2 position, releasing fatty acids and lysophospholipids. These products serve as signaling molecules and precursors for various bioactive compounds. The positive regulation of PLA2 activity involves a complex interplay of factors that enhance the catalytic activity of these enzymes. This regulation can occur at multiple levels, including transcriptional, translational, and post-translational modifications. **Transcriptional Regulation:** The expression of PLA2 genes can be upregulated by various stimuli, including inflammatory cytokines, growth factors, and stress signals. These stimuli activate specific transcription factors, such as nuclear factor-kappa B (NF-κB) and activator protein 1 (AP-1), which bind to the promoters of PLA2 genes, enhancing their transcription. **Translational Regulation:** The translation of PLA2 mRNAs can also be regulated by various factors, including microRNAs (miRNAs). Certain miRNAs have been shown to suppress PLA2 expression by binding to their 3' untranslated region (3'UTR), thereby inhibiting their translation. **Post-translational Modifications:** PLA2 activity can be regulated by a variety of post-translational modifications, including phosphorylation, acetylation, and ubiquitination. Phosphorylation of PLA2 by specific kinases, such as protein kinase C (PKC) and mitogen-activated protein kinases (MAPKs), can enhance its catalytic activity. Acetylation, a process that involves the addition of an acetyl group to lysine residues, has been shown to regulate the activity of certain PLA2 isoforms. **Other Regulatory Mechanisms:** In addition to the aforementioned mechanisms, PLA2 activity can be regulated by interactions with other proteins, such as calcium-binding proteins and phospholipid-binding proteins. Calcium ions play a critical role in activating PLA2 by binding to its calcium-binding sites, which induces conformational changes that enhance its catalytic activity. **Overall, the positive regulation of PLA2 activity is a tightly controlled process involving multiple levels of regulation. This intricate regulation ensures that PLA2 activity is appropriately modulated in response to cellular stimuli and physiological demands.**'
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| Protein | Definition | Taxonomy |
|---|---|---|
| Phospholipase A-2-activating protein | A phospholipase A-2-activating protein that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9Y263] | Homo sapiens (human) |
| Vasopressin V1b receptor | A vasopressin V1b receptor that is encoded in the genome of human. [PRO:WCB, UniProtKB:P47901] | Homo sapiens (human) |
| Type-1 angiotensin II receptor | An angiotensin II receptor 1 that is encoded in the genome of human. [PRO:WCB, UniProtKB:P30556] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| 5-iodo-2-(oxaloamino)benzoic acid | organoiodine compound | ||
| 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 | |
| candesartan | candesartan : A benzimidazolecarboxylic acid that is 1H-benzimidazole-7-carboxylic acid substituted by an ethoxy group at position 2 and a ({2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl}methyl) group at position 1. It is a angiotensin receptor antagonist used for the treatment of hypertension. candesartan: a nonpeptide angiotensin II receptor antagonist | benzimidazolecarboxylic acid; biphenylyltetrazole | angiotensin receptor antagonist; antihypertensive agent; environmental contaminant; xenobiotic |
| thiorphan | Thiorphan: A potent inhibitor of membrane metalloendopeptidase (ENKEPHALINASE). Thiorphan potentiates morphine-induced ANALGESIA and attenuates naloxone-precipitated withdrawal symptoms. | N-acyl-amino acid | |
| avapro | irbesartan : A biphenylyltetrazole that is an angiotensin II receptor antagonist used mainly for the treatment of hypertension. Irbesartan: A spiro compound, biphenyl and tetrazole derivative that acts as an angiotensin II type 1 receptor antagonist. It is used in the management of HYPERTENSION, and in the treatment of kidney disease. | azaspiro compound; biphenylyltetrazole | angiotensin receptor antagonist; antihypertensive agent; environmental contaminant; xenobiotic |
| 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 |
| propranolol | propranolol : A propanolamine that is propan-2-ol substituted by a propan-2-ylamino group at position 1 and a naphthalen-1-yloxy group at position 3. Propranolol: A widely used non-cardioselective beta-adrenergic antagonist. Propranolol has been used for MYOCARDIAL INFARCTION; ARRHYTHMIA; ANGINA PECTORIS; HYPERTENSION; HYPERTHYROIDISM; MIGRAINE; PHEOCHROMOCYTOMA; and ANXIETY but adverse effects instigate replacement by newer drugs. | naphthalenes; propanolamine; secondary amine | anti-arrhythmia drug; antihypertensive agent; anxiolytic drug; beta-adrenergic antagonist; environmental contaminant; human blood serum metabolite; vasodilator agent; xenobiotic |
| leucine | 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. Leucine: An essential branched-chain amino acid important for hemoglobin formation. | amino 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 |
| phenylalanine | 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. Phenylalanine: An essential aromatic amino acid that is a precursor of MELANIN; DOPAMINE; noradrenalin (NOREPINEPHRINE), and THYROXINE. | 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 |
| tryptophan | tryptophan : An alpha-amino acid that is alanine bearing an indol-3-yl substituent at position 3. 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. | erythrose 4-phosphate/phosphoenolpyruvate family amino acid; L-alpha-amino acid; L-alpha-amino acid zwitterion; proteinogenic amino acid; tryptophan; tryptophan zwitterion | antidepressant; Escherichia coli metabolite; human metabolite; micronutrient; mouse metabolite; nutraceutical; plant metabolite; Saccharomyces cerevisiae metabolite |
| homoarginine | L-homoarginine : An L-lysine derivative that is the L-enantiomer of homoarginine. | homoarginine; L-lysine derivative; non-proteinogenic L-alpha-amino acid | biomarker; EC 3.1.3.1 (alkaline phosphatase) inhibitor; human metabolite; rat metabolite; xenobiotic metabolite |
| levamisole | levamisole : A 6-phenyl-2,3,5,6-tetrahydroimidazo[2,1-b][1,3]thiazole that has S configuration. It is used (generally as the monohydrochloride salt) to treat parasitic worm infections in pigs, sheep and cattle and was formerly used in humans as an adjuvant to chemotherapy for the treatment of various cancers. It is also widely used as an adulterant to coccaine. Levamisole: An antihelminthic drug that has been tried experimentally in rheumatic disorders where it apparently restores the immune response by increasing macrophage chemotaxis and T-lymphocyte function. Paradoxically, this immune enhancement appears to be beneficial in rheumatoid arthritis where dermatitis, leukopenia, and thrombocytopenia, and nausea and vomiting have been reported as side effects. (From Smith and Reynard, Textbook of Pharmacology, 1991, p435-6) | 6-phenyl-2,3,5,6-tetrahydroimidazo[2,1-b][1,3]thiazole | antinematodal drug; antirheumatic drug; EC 3.1.3.1 (alkaline phosphatase) inhibitor; immunological adjuvant; immunomodulator |
| 1-(3,4-dihydroxyphenyl)-2-(1-imidazolyl)ethanone | aromatic ketone | ||
| ipsapirone | N-arylpiperazine | ||
| flesinoxan | |||
| valsartan | valsartan : A monocarboxylic acid amide consisting of L-valine in which the amino hydrogens have been replaced by a pentanoyl and a [2'-(1H-tetrazol-5-yl)biphenyl]-4-yl]methyl group. It exhibits antihypertensive activity. Valsartan: A tetrazole derivative and ANGIOTENSIN II TYPE 1 RECEPTOR BLOCKER that is used to treat HYPERTENSION. | biphenylyltetrazole; monocarboxylic acid; monocarboxylic acid amide | angiotensin receptor antagonist; antihypertensive agent; environmental contaminant; xenobiotic |
| tasosartan | tasosartan: angiotensin II antagonist; structure given in first source | biphenyls | |
| telmisartan | telmisartan : A member of the class of benzimidazoles used widely in the treatment of hypertension. Telmisartan: A biphenyl compound and benzimidazole derivative that acts as an angiotensin II type 1 receptor antagonist. It is used in the management of HYPERTENSION. | benzimidazoles; biphenyls; carboxybiphenyl | angiotensin receptor antagonist; antihypertensive agent; EC 3.4.15.1 (peptidyl-dipeptidase A) inhibitor; environmental contaminant; xenobiotic |
| gr 117289 | GR 117289: angiotensin AT1 receptor antagonist; structure given in first source zolasartan : A member of the class of 1-benzofurans that is 3-bromo-1-benzofuran which is substituted by a 2-(1H-tetrazol-5-yl)phenyl group at position 2 and by a (2-butyl-5-carboxy-4-chloro-1H-imidazol-1-yl)methyl group at position 5. It is an angiotensin II receptor type 1 (AT1) antagonist and was in clinical trials for the treatment of hypertension (now discontinued). | 1-benzofurans; biaryl; imidazolyl carboxylic acid; monocarboxylic acid; organobromine compound; organochlorine compound; tetrazoles | angiotensin receptor antagonist; antihypertensive agent |
| exp3174 | losartan carboxylic acid : A biphenylyltetrazole that is losartan with the hydroxymethyl group at position 5 on the imidazole ring replaced with a carboxylic acid. losartan carboxylic acid: structure given in first source | biphenylyltetrazole; imidazoles; organochlorine compound | metabolite |
| mozavaptan | mozavaptan: aquaretic agent; vasopressin V2 receptor antagonist; structure given in first source | benzamides | aquaretic |
| l 692429 | L 692429: stimulates release of growth hormone; RN refers to (R)-isomer; structure given in first source | ||
| angiotensin ii, des-asp(1)-des-arg(2)-ile(5)- | angiotensin II, des-Asp(1)-des-Arg(2)-Ile(5)-: 3-8 hexapeptide fragment of angiotensin II; smallest potent angiotensin II antagonist | organic molecular entity | |
| exp7711 | EXP7711: to search, use E#P7711(nm); angiotensin II receptor antagonist; structure given in first source | ||
| bibs 39 | BIBS 39: structure given in first source; angiotensin II receptor antagonist | ||
| bibs 222 | BIBS 222: structure given in first source; angiotensin II receptor antagonist | ||
| forasartan | forasartan : A member of the class of pyridines that is pyridine which is substituted at positions 2 and 5 by o-(tetrazol-5-yl)phenyl and (3,5-dibutyl-1,2,4-triazol-1-yl)methyl groups, respectively. It is a nonpeptide antagonist of angiotensin II, type 1 (AT1) receptors, used for the treatment of hypertension. forasartan: structure given in first source; an angiotensin AT(1) receptor antagonist; angiotensin II receptor antagonist; used in treatment of congestive heart failure | benzenes; pyridines; tetrazoles; triazoles | angiotensin receptor antagonist; antihypertensive agent |
| up 269-6 | UP 269-6: structure given in first source; angiotensin receptor antagonist | ||
| mk 996 | MK 996: an AT1-selective angiotensin II receptor antagonist; structure given in first source | ||
| bms 207940 | N-((2'-(((4,5-dimethyl-3-isoxazolyl)amino)sulfonyl)-4-(2-oxazolyl)(1,1'-biphenyl)-2-yl)methyl)-N,3,3-trimethylbutanamide: an ET(A) receptor antagonist; structure in first source | ||
| angiotensin ii | Giapreza: injectable form of angiotensin II used to increase blood pressure in adult patients with septic or other distributive shock Ile(5)-angiotensin II : An angiotensin II that acts on the central nervous system (PDB entry: 1N9V). | amino acid zwitterion; angiotensin II | human metabolite |
| piboserod | Serotonin 5-HT4 Receptor Antagonists: Drugs that bind to but do not activate SEROTONIN 5-HT4 RECEPTORS, thereby blocking the actions of SEROTONIN or SEROTONIN RECEPTOR AGONISTS. | ||
| l 158809 | L 158809: RN & structure given in first source; angiotensin receptor antagonist | ||
| oxytocin | oxytocin : A cyclic nonapeptide hormone with amino acid sequence CYIQNCPLG that also acts as a neurotransmitter in the brain; the principal uterine-contracting and milk-ejecting hormone of the posterior pituitary. Together with the neuropeptide vasopressin, it is believed to influence social cognition and behaviour. Oxytocin: A nonapeptide hormone released from the neurohypophysis (PITUITARY GLAND, POSTERIOR). It differs from VASOPRESSIN by two amino acids at residues 3 and 8. Oxytocin acts on SMOOTH MUSCLE CELLS, such as causing UTERINE CONTRACTIONS and MILK EJECTION. | heterodetic cyclic peptide; peptide hormone | oxytocic; vasodilator agent |
| 2-(oxaloamino)benzoic acid | (oxaloamino)benzoic acid | ||
| deaminooxytocin | demoxytocin : A heterodetic cyclic peptide that is the synthetic analog of the peptide hormone oxytocin where the free amino group in the half-cystine residue is replaced by hydrogen. The mechanism of action and pharmacological properties of demoxytocin and oxytocin are similar. The drug affects the permeability of the cell membrane, increasing the content of calcium ions in smooth muscle cells, thereby increasing its contraction. It stimulates the contraction of smooth muscles of the uterus, as well as stimulating the contraction of myoepithelial cells of the mammary gland, and enhances the secretion of milk. | heterodetic cyclic peptide | oxytocic |
| arginine vasopressin | Arginine Vasopressin: The predominant form of mammalian antidiuretic hormone. It is a nonapeptide containing an ARGININE at residue 8 and two disulfide-linked cysteines at residues of 1 and 6. Arg-vasopressin is used to treat DIABETES INSIPIDUS or to improve vasomotor tone and BLOOD PRESSURE. argipressin : The predominant form of mammalian vasopressin (antidiuretic hormone). It is a nonapeptide containing an arginine at residue 8 and two disulfide-linked cysteines at residues of 1 and 6. | vasopressin | cardiovascular drug; hematologic agent; mitogen |
| omapatrilat | omapatrilat: structure in first source | dipeptide | |
| caffeic acid | trans-caffeic acid : The trans-isomer of caffeic acid. | caffeic acid | geroprotector; mouse metabolite |
| 1-(3,4-dihydroxyphenyl)-2-[(4,6-dimethyl-2-pyrimidinyl)thio]ethanone | aromatic ketone | ||
| 2,5-dimethoxy-n-(quinolin-3-yl)benzenesulfonamide | 2,5-dimethoxy-N-(quinolin-3-yl)benzenesulfonamide: a tissue-nonspecific alkaline phosphatase inhibitor; structure in first source | quinolines | |
| opc 51803 | OPC 51803: a nonpeptide vasopressin V(2)-agonist; structure in first source | ||
| eprosartan | eprosartan : A member of the class of imidazoles and thiophenes that is an angiotensin II receptor antagonist used for the treatment of high blood pressure. eprosartan: angiotensin II receptor antagonist | dicarboxylic acid; imidazoles; thiophenes | angiotensin receptor antagonist; antihypertensive agent; environmental contaminant; xenobiotic |
| atosiban | oligopeptide | ||
| deamino arginine vasopressin | Deamino Arginine Vasopressin: A synthetic analog of the pituitary hormone, ARGININE VASOPRESSIN. Its action is mediated by the VASOPRESSIN receptor V2. It has prolonged antidiuretic activity, but little pressor effects. It also modulates levels of circulating FACTOR VIII and VON WILLEBRAND FACTOR. | heterodetic cyclic peptide | diagnostic agent; renal agent; vasopressin receptor agonist |
| pd 123319 | PD123319 : An imidazopyridine consisting of 4,5,6,7-tetrahydro-1H-imidazo[4,5-c]pyridine having 4-(dimethylamino)-3-methylbenzyl, diphenylacetyl and carboxy and groups at positions 1, 5 and 6 respectively | imidazopyridine | angiotensin receptor antagonist; endothelin receptor antagonist; vasoconstrictor agent |
| exp 655 | |||
| way-151932 | WAY-151932: structure in first source | ||
| angiotensin ii, 1-sar-5-ile-8-ala- | |||
| saralasin | Saralasin: An octapeptide analog of angiotensin II (bovine) with amino acids 1 and 8 replaced with sarcosine and alanine, respectively. It is a highly specific competitive inhibitor of angiotensin II that is used in the diagnosis of HYPERTENSION. | oligopeptide | |
| l 162313 | L 162313: a biphenylimidazole derivative; a non-peptide angiotensin agonist; no further information available 2/95 | ||
| 4-oxo-6-((pyrimidin-2-ylthio)methyl)-4h-pyran-3-yl 4-nitrobenzoate | 4-oxo-6-((pyrimidin-2-ylthio)methyl)-4H-pyran-3-yl 4-nitrobenzoate: structure in first source | nitrobenzoic acid | |
| zd 7155 | |||
| bms 193884 | |||
| l 163491 | L 163491: structure given in first source | ||
| fr 148083 | 5Z-7-oxozeaenol : A macrolide that is the 7-oxo derivative of zeaenol (the 5Z stereoisomer). Isolated from Fungi, it exhibits cytotoxic, antibacterial and inhibitory activity against NF-kappaB. | aromatic ether; macrolide; phenols; secondary alcohol; secondary alpha-hydroxy ketone | antibacterial agent; antineoplastic agent; metabolite; NF-kappaB inhibitor |
| fimasartan | fimasartan: an angiotensin II receptor antagonist | biphenyls | |
| ssr 149415 | |||
| bms 248360 | |||
| ema401 | |||
| gsk221149a | GSK221149A: highly selective oxytocin receptor antagonist; structure in first source | dipeptide | |
| naluzotan | naluzotan: an antidepressant and anti-anxiety agent; structure in first source | ||
| epelsiban | epelsiban: structure in first source | dipeptide | |
| carbetocin | carbetocin : Oxytocin in which the hydrogen on the phenolic hydroxy group is substituted by methyl, the amino group on the cysteine residue is substituted by hydrogen, and the sulfur of the cysteine residue is replaced by a methylene group. A synthetic carba-analogue of oxytocin, it is used to control bleeding after giving birth. Like oxytocin, it causes contraction of the uterus. | heterodetic cyclic peptide | oxytocic |
| vasopressin, 1-deamino-4-val-8-arg- | |||
| nitd 609 | NITD 609: an antimalarial and coccidiostat; structure in first source | ||
| way 267464 |