Target type: molecularfunction
Catalysis of the reaction: prostaglandin H(2) = prostaglandin E(2). [EC:5.3.99.3, RHEA:12893]
Prostaglandin-E synthase (PGES) activity catalyzes the conversion of prostaglandin H2 (PGH2) to prostaglandin E2 (PGE2). This enzymatic reaction is a crucial step in the biosynthesis of PGE2, a potent lipid mediator involved in a wide range of physiological processes. PGE2 plays a significant role in inflammation, pain, fever, and other biological responses. PGES enzymes exhibit a high degree of specificity for PGH2 as a substrate, ensuring the efficient production of PGE2. The catalytic mechanism involves the removal of a water molecule from PGH2, leading to the formation of the characteristic cyclopentane ring structure of PGE2. This process typically occurs in the endoplasmic reticulum (ER) and involves the transfer of a proton from the hydroxyl group of PGH2 to the carboxyl group of the enzyme, facilitating the ring closure reaction. PGES enzymes belong to the family of short-chain dehydrogenases/reductases (SDR) and exhibit distinct structural features, including a Rossmann fold domain and a conserved active site. These structural characteristics are essential for substrate binding and catalytic activity. In addition to the primary function of PGE2 synthesis, PGES enzymes have also been implicated in the regulation of other signaling pathways, such as those involving the arachidonic acid cascade. This broader role underscores the importance of PGES activity in maintaining cellular homeostasis and modulating biological responses.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| Prostaglandin E synthase 2 | A prostaglandin E synthase 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9H7Z7] | Homo sapiens (human) |
| Prostaglandin E synthase 2 | A prostaglandin E synthase 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9H7Z7] | Homo sapiens (human) |
| Prostaglandin E synthase | A prostaglandin E synthase that is encoded in the genome of human. [PRO:DNx, UniProtKB:O14684] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| celecoxib | organofluorine compound; pyrazoles; sulfonamide; toluenes | cyclooxygenase 2 inhibitor; geroprotector; non-narcotic analgesic; non-steroidal anti-inflammatory drug | |
| embelin | embelin : A member of the class of dihydroxy-1,4-benzoquinones that is 2,5-dihydroxy-1,4-benzoquinone which is substituted by an undecyl group at position 3. Isolated from Lysimachia punctata and Embelia ribes, it exhibits antimicrobial, antineoplastic and inhibitory activity towards hepatitis C protease. embelin: from Embelia fruit (Myrsinaceae) | dihydroxy-1,4-benzoquinones | antimicrobial agent; antineoplastic agent; hepatitis C protease inhibitor; plant metabolite |
| indomethacin | indometacin : A member of the class of indole-3-acetic acids that is indole-3-acetic acid in which the indole ring is substituted at positions 1, 2 and 5 by p-chlorobenzoyl, methyl, and methoxy groups, respectively. A non-steroidal anti-inflammatory drug, it is used in the treatment of musculoskeletal and joint disorders including osteoarthritis, rheumatoid arthritis, gout, bursitis and tendinitis. Indomethacin: A non-steroidal anti-inflammatory agent (NSAID) that inhibits CYCLOOXYGENASE, which is necessary for the formation of PROSTAGLANDINS and other AUTACOIDS. It also inhibits the motility of POLYMORPHONUCLEAR LEUKOCYTES. | aromatic ether; indole-3-acetic acids; monochlorobenzenes; N-acylindole | analgesic; drug metabolite; EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor; environmental contaminant; gout suppressant; non-steroidal anti-inflammatory drug; xenobiotic; xenobiotic metabolite |
| n-(2-cyclohexyloxy-4-nitrophenyl)methanesulfonamide | N-(2-cyclohexyloxy-4-nitrophenyl)methanesulfonamide: structure given in first source NS-398 : A C-nitro compound that is N-methylsulfonyl-4-nitroaniline bearing an additional cyclohexyloxy substituent at position 2. | aromatic ether; C-nitro compound; sulfonamide | antineoplastic agent; cyclooxygenase 2 inhibitor |
| zileuton | 1-benzothiophenes; ureas | anti-asthmatic drug; EC 1.13.11.34 (arachidonate 5-lipoxygenase) inhibitor; ferroptosis inhibitor; leukotriene antagonist; non-steroidal anti-inflammatory drug | |
| epigallocatechin gallate | (-)-epigallocatechin 3-gallate : A gallate ester obtained by the formal condensation of gallic acid with the (3R)-hydroxy group of (-)-epigallocatechin. epigallocatechin gallate: a steroid 5alpha-reductase inhibitor and antimutagen in green tea (Camellia sinensis) | flavans; gallate ester; polyphenol | antineoplastic agent; antioxidant; apoptosis inducer; geroprotector; Hsp90 inhibitor; neuroprotective agent; plant metabolite |
| salvin | salvin: a biocyclic diterpenoid; from sage and rosemary (Lamiaceae) | abietane diterpenoid; carbotricyclic compound; catechols; monocarboxylic acid | angiogenesis modulating agent; anti-inflammatory agent; antineoplastic agent; antioxidant; apoptosis inducer; food preservative; HIV protease inhibitor; plant metabolite |
| atranorin | atranorin: RN given refers to parent cpd; structure given in first source | carbonyl compound | |
| l 655240 | L 655240: thromboxane and prostaglandin endoperoxide receptor antagonist; structure given in first source; RN given is for parent cpd | methylindole | |
| ml-3000 | |||
| acrovestone | acrovestone : A polyphenol that is isolated from Acronychia pedunculata and exhibits moderate antioxidant and antityrosinase activities. acrovestone: isolated from the stem bark of Acronychia pedunculata; RN given from CAS Index Guide (1982-1986) | acetophenones; aromatic ether; olefinic compound; polyphenol | antioxidant; EC 1.14.18.1 (tyrosinase) inhibitor; plant metabolite |
| boswellic acid | boswellic acid: ursane type; RN given refers to (3alpha,4beta)-isomer; active principle of salai guggal; see also record for salai guggal | triterpenoid | |
| perlatolinic acid | perlatolinic acid: C25-H32-O7; structure in first source | carbonyl compound | |
| hyperforin | hyperforin : A cyclic terpene ketone that is a prenylated carbobicyclic acylphloroglucinol derivative produced by St. John's Wort, Hypericum perforatum. hyperforin: a prenylated acylphloroglucinol derivative; antibiotic component of novoimanine; psychoactive agent in St. John's wort; Russian; structure; | ||
| carnosol | carnosol: isolated from Lepechinia hastata | diterpenoid | |
| olivetoric acid | olivetoric acid: isolated from Pseudevernia furfuracea; structure in first source | carbonyl compound | |
| curcumin | curcumin : A beta-diketone that is methane in which two of the hydrogens are substituted by feruloyl groups. A natural dyestuff found in the root of Curcuma longa. Curcumin: A yellow-orange dye obtained from tumeric, the powdered root of CURCUMA longa. It is used in the preparation of curcuma paper and the detection of boron. Curcumin appears to possess a spectrum of pharmacological properties, due primarily to its inhibitory effects on metabolic enzymes. | aromatic ether; beta-diketone; diarylheptanoid; enone; polyphenol | anti-inflammatory agent; antifungal agent; antineoplastic agent; biological pigment; contraceptive drug; dye; EC 1.1.1.205 (IMP dehydrogenase) inhibitor; EC 1.1.1.21 (aldehyde reductase) inhibitor; EC 1.1.1.25 (shikimate dehydrogenase) inhibitor; EC 1.6.5.2 [NAD(P)H dehydrogenase (quinone)] inhibitor; EC 1.8.1.9 (thioredoxin reductase) inhibitor; EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor; EC 3.5.1.98 (histone deacetylase) inhibitor; flavouring agent; food colouring; geroprotector; hepatoprotective agent; immunomodulator; iron chelator; ligand; lipoxygenase inhibitor; metabolite; neuroprotective agent; nutraceutical; radical scavenger |
| sulindac | sulindac : A monocarboxylic acid that is 1-benzylidene-1H-indene which is substituted at positions 2, 3, and 5 by methyl, carboxymethyl, and fluorine respectively, and in which the phenyl group of the benzylidene moiety is substituted at the para position by a methylsulfinyl group. It is a prodrug for the corresponding sulfide, a non-steroidal anti-inflammatory drug, used particularly in the treatment of acute and chronic inflammatory conditions. Sulindac: A sulfinylindene derivative prodrug whose sulfinyl moiety is converted in vivo to an active NSAID analgesic. Specifically, the prodrug is converted by liver enzymes to a sulfide which is excreted in the bile and then reabsorbed from the intestine. This helps to maintain constant blood levels with reduced gastrointestinal side effects. | monocarboxylic acid; organofluorine compound; sulfoxide | analgesic; antineoplastic agent; antipyretic; apoptosis inducer; EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor; non-narcotic analgesic; non-steroidal anti-inflammatory drug; prodrug; tocolytic agent |
| thiambutosine | thiambutosine: thiourea antileprotic agent used in patients who cannot tolerate sulfones; minor descriptor (77-85); on-line & Index Medicus PHENYLTHIOUREA/AA (77-85) | ||
| l 663536 | 3-[3-(tert-butylsulfanyl)-1-(4-chlorobenzyl)-5-(propan-2-yl)-1H-indol-2-yl]-2,2-dimethylpropanoic acid : A member of the class of indoles that is 1H-indole substituted by a isopropyl group at position 5, a tert-butylsulfanediyl group at position 3, a 4-chlorobenzyl group at position 1 and a 2-carboxy-2-methylpropyl group at position 2. It acts as an inhibitor of arachidonate 5-lipoxygenase. MK-886: orally active leukotriene biosynthesis inhibitor | aryl sulfide; indoles; monocarboxylic acid; monochlorobenzenes | antineoplastic agent; EC 1.13.11.34 (arachidonate 5-lipoxygenase) inhibitor; leukotriene antagonist |
| guttiferone e | guttiferone E: isolated from the fruits of Garcinia pyrifera collected in Malaysia; structure in first source | ||
| 2-tert-butyl-9-fluoro-3,6-dihydro-7h-benz(h)imidazo(4,5-f)isoquinoline-7-one | 2-tert-butyl-9-fluoro-1,6-dihydrobenzo[h]imidazo[4,5-f]isoquinolin-7-one : An organic heterotetracyclic compound that is 1,6-dihydrobenzo[h]imidazo[4,5-f]isoquinolin-7-one bearing additional tert-butyl and fluoro substituents at positions 2 and 9 respectively. 2-tert-butyl-9-fluoro-3,6-dihydro-7H-benz(h)imidazo(4,5-f)isoquinoline-7-one: a janus-activated kinase inhibitor | organic heterotetracyclic compound; organofluorine compound | EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor |
| eupomatenoid 6 | eupomatenoid 6: RN given for (E)-isomer; structure in first source rataniaphenol II : A member of the class of benzofurans that is 1-benzofuran substituted by a 4-hydroxyphenyl group at position 2, a methyl group at position 3 and a prop-1-en-1-yl group at position 5. It is a lignan derivative isolated from the roots of Krameria lappacea. | benzofurans; phenols | anti-inflammatory agent; cyclooxygenase 1 inhibitor; cyclooxygenase 2 inhibitor; NF-kappaB inhibitor; plant metabolite |
| 2-[[5,6-bis(2-furanyl)-1,2,4-triazin-3-yl]thio]-1-(4-methoxyphenyl)ethanone | aromatic ketone | ||
| 11-keto-boswellic acid | |||
| conocarpan | conocarpan: RN given for (2R-(2alpha,3beta,5(E))-isomer; from the roots of Krameria tomentosa (Krameriaceae); structure in first source | ||
| acetyl-11-ketoboswellic acid | acetyl-11-ketoboswellic acid: a 5-lipoxygenase inhibitor; structure given in first source | triterpenoid | |
| 3-o-acetyl-beta-boswellic acid | 3-O-acetyl-beta-boswellic acid: isolated from Boswellia serrata; structure in first source | ||
| roburic acid | roburic acid : A tetracyclic triterpenoid with formula C30H40O2 that is isolated from the roots of Gentiana dahurica and Gentiana macrophylla. | monocarboxylic acid; olefinic compound; tetracyclic triterpenoid | plant metabolite |
| mf63 compound | MF63 compound: a phenanthrene imidazole identified as a potent, selective, and orally active mPGES-1 inhibitor; structure in first source | ||
| beta-Elemonic acid | beta-elemonic acid: extracted from Boswellia carterii | triterpenoid | |
| ys 121 | 2-(4-chloro-6-(2,3-dimethylphenylamino)pyrimidin-2-ylthio)octanoic acid: inhibits microsomal prostaglanding E2 synthase; structure in first source | medium-chain fatty acid | |
| myrtucommulone a | myrtucommulone A: from the leaves of myrtle, Myrtus communis (Myrtaceae); structure in first source | aromatic ketone | |
| arzanol | arzanol: a prenylated alpha-pyrone-phloroglucinol etherodimer from Helichrysum italicum subsp.microphyllum; has antioxidant and cytotoxic activity; structure in first source | ||
| pf 9184 |