Summary

Name PTGS2
Full Name Prostaglandin G/H synthase 2
Synonyms Cyclooxygenase-2, COX-2, PHS II, Prostaglandin H2 synthase 2, PGH synthase 2, PGHS-2, Prostaglandin-endoperoxide synthase 2 | COX2
Primary ID P35354
Links - -
Type protein
Relations 38
Pathways Acute Myeloid Leukemia, AML1-ETO in AML, Pericyte: Prostaglandins and myogenesis, SARS-CoV INFLAMMATORY RESPONSE, Satellite: Prostaglandins and myogenesis
Inhibitors 5-benzoyl-2,3-dihydro-1H-pyrrolizine-1-carboxylic acid; ibuprofen; suprofen; acetylsalicylic acid; oxaprozin; indometacin; ketoprofen; celecoxib; Pravadoline; naproxen; piroxicam; meloxicam; paracetamol
Function Dual cyclooxygenase and peroxidase in the biosynthesis pathway of prostanoids, a class of C20 oxylipins mainly derived from arachidonate, with a particular role in the inflammatory response (PubMed:7947975, PubMed:7592599, PubMed:9261177, PubMed:16373578, PubMed:22942274, PubMed:26859324, PubMed:27226593, PubMed:11939906, PubMed:19540099). The cyclooxygenase activity oxygenates arachidonate (AA, C20:4(n-6)) to the hydroperoxy endoperoxide prostaglandin G2 (PGG2), and the peroxidase activity reduces PGG2 to the hydroxy endoperoxide PGH2, the precursor of all 2-series prostaglandins and thromboxanes (PubMed:7947975, PubMed:7592599, PubMed:9261177, PubMed:16373578, PubMed:22942274, PubMed:26859324, PubMed:27226593). This complex transformation is initiated by abstraction of hydrogen at carbon 13 (with S-stereochemistry), followed by insertion of molecular O2 to form the endoperoxide bridge between carbon 9 and 11 that defines prostaglandins. The insertion of a second molecule of O2 (bis-oxygenase activity) yields a hydroperoxy group in PGG2 that is then reduced to PGH2 by two electrons (PubMed:7947975, PubMed:7592599, PubMed:9261177, PubMed:16373578, PubMed:22942274, PubMed:26859324, PubMed:27226593). Similarly catalyzes successive cyclooxygenation and peroxidation of dihomo-gamma-linoleate (DGLA, C20:3(n-6)) and eicosapentaenoate (EPA, C20:5(n-3)) to corresponding PGH1 and PGH3, the precursors of 1- and 3-series prostaglandins (PubMed:11939906, PubMed:19540099). In an alternative pathway of prostanoid biosynthesis, converts 2-arachidonoyl lysophopholipids to prostanoid lysophopholipids, which are then hydrolyzed by intracellular phospholipases to release free prostanoids (PubMed:27642067). Metabolizes 2-arachidonoyl glycerol yielding the glyceryl ester of PGH2, a process that can contribute to pain response (PubMed:22942274). Generates lipid mediators from n-3 and n-6 polyunsaturated fatty acids (PUFAs) via a lipoxygenase-type mechanism. Oxygenates PUFAs to hydroperoxy compounds and then reduces them to corresponding alcohols (PubMed:11034610, PubMed:11192938, PubMed:9048568, PubMed:9261177). Plays a role in the generation of resolution phase interaction products (resolvins) during both sterile and infectious inflammation (PubMed:12391014). Metabolizes docosahexaenoate (DHA, C22:6(n-3)) to 17R-HDHA, a precursor of the D-series resolvins (RvDs) (PubMed:12391014). As a component of the biosynthetic pathway of E-series resolvins (RvEs), converts eicosapentaenoate (EPA, C20:5(n-3)) primarily to 18S-HEPE that is further metabolized by ALOX5 and LTA4H to generate 18S-RvE1 and 18S-RvE2 (PubMed:21206090). In vascular endothelial cells, converts docosapentaenoate (DPA, C22:5(n-3)) to 13R-HDPA, a precursor for 13-series resolvins (RvTs) shown to activate macrophage phagocytosis during bacterial infection (PubMed:26236990). In activated leukocytes, contributes to oxygenation of hydroxyeicosatetraenoates (HETE) to diHETES (5,15-diHETE and 5,11-diHETE) (PubMed:22068350, PubMed:26282205). During neuroinflammation, plays a role in neuronal secretion of specialized preresolving mediators (SPMs) 15R-lipoxin A4 that regulates phagocytic microglia (By similarity).

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Relations

Regulator Mechanism target score
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: In Vitro
+ up-regulates img/indirect-activation.png Inflammation 0.7
Publications: 1 Organism: Homo Sapiens
Pathways:SARS-CoV INFLAMMATORY RESPONSE
+ up-regulates img/direct-activation.png chemical modification prostaglandin F2alpha 0.8
Publications: 2 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 2 Organism: In Vitro
+ up-regulates quantity by expression img/direct-activation.png transcriptional regulation PTGS2 0.385
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png PTGS2 0.378
Publications: 1 Organism: Homo Sapiens
Pathways:Acute Myeloid Leukemia, SARS-CoV INFLAMMATORY RESPONSE
+ up-regulates img/direct-activation.png chemical modification prostaglandin D2 0.8
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 2 Organism: In Vitro, Rattus Norvegicus
Tissue: Aorta
+ up-regulates quantity img/direct-activation.png chemical modification prostaglandin E2(1-) 0.8
Publications: 1 Organism: Homo Sapiens
Pathways:Acute Myeloid Leukemia, AML1-ETO in AML
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation PTGS2 0.2
Publications: 1 Organism: Mus Musculus
Pathways:Acute Myeloid Leukemia, AML1-ETO in AML
+ up-regulates img/direct-activation.png MYOD1 0.269
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity img/direct-activation.png chemical modification prostaglandin G2(1-) 0.8
Publications: 1 Organism: In Vitro
+ up-regulates img/direct-activation.png PTGS2 0.256
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/direct-activation.png transcriptional regulation PTGS2 0.326
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png IL4 0.464
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/direct-activation.png transcriptional regulation PTGS2 0.285
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png chemical modification Prostacycline 0.8
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png transcriptional regulation PTGS2 0.2
Publications: 1 Organism: Homo Sapiens
Pathways:SARS-CoV INFLAMMATORY RESPONSE
+ up-regulates activity img/direct-activation.png transcriptional regulation PTGS2 0.2
Publications: 1 Organism: Homo Sapiens
Pathways:SARS-CoV INFLAMMATORY RESPONSE
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: In Vitro
+ down-regulates img/indirect_inhibition.png GSK3B 0.424
Publications: 1 Organism: Homo Sapiens
Pathways:Acute Myeloid Leukemia
+ up-regulates quantity img/direct-activation.png chemical modification prostaglandin H2(1-) 0.8
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: In Vitro
+ up-regulates quantity by expression img/direct-activation.png transcriptional regulation PTGS2 0.288
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition PTGS2 0.8
Publications: 1 Organism: Homo Sapiens
+ down-regulates quantity img/direct_inhibition.png chemical modification episterol ester 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation PTGS2 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/indirect-activation.png PTGS2 0.8
Publications: 1 Organism: Homo Sapiens