Aliases for PTGS1 Gene
External Ids for PTGS1 Gene
Previous GeneCards Identifiers for PTGS1 Gene
This is one of two genes encoding similar enzymes that catalyze the conversion of arachinodate to prostaglandin. The encoded protein regulates angiogenesis in endothelial cells, and is inhibited by nonsteroidal anti-inflammatory drugs such as aspirin. Based on its ability to function as both a cyclooxygenase and as a peroxidase, the encoded protein has been identified as a moonlighting protein. The protein may promote cell proliferation during tumor progression. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]
GeneCards Summary for PTGS1 Gene
PTGS1 (Prostaglandin-Endoperoxide Synthase 1) is a Protein Coding gene. Diseases associated with PTGS1 include Gastric Ulcer and Aspirin Resistance. Among its related pathways are Neuroscience and Folate Metabolism. Gene Ontology (GO) annotations related to this gene include heme binding and dioxygenase activity. An important paralog of this gene is PTGS2.
UniProtKB/Swiss-Prot Summary for PTGS1 Gene
Converts arachidonate to prostaglandin H2 (PGH2), a committed step in prostanoid synthesis. Involved in the constitutive production of prostanoids in particular in the stomach and platelets. In gastric epithelial cells, it is a key step in the generation of prostaglandins, such as prostaglandin E2 (PGE2), which plays an important role in cytoprotection. In platelets, it is involved in the generation of thromboxane A2 (TXA2), which promotes platelet activation and aggregation, vasoconstriction and proliferation of vascular smooth muscle cells.
Cyclooxygenase (also known as COX, Prostaglandin-endoperoxide synthase, Prostaglandin G/H synthase) is expressed in cells in three isoforms. COX-1 (constitutive) and COX-2 (inducible) isoforms catalyze the rate-limiting step of prostaglandin production.