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PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

PTGIS
Synonyms CYP8A1, PGIS
Gene descriptioni

Full gene name according to HGNC.

Prostaglandin I2 synthase
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Disease related genes
Enzymes
FDA approved drug targets
Metabolic proteins
Plasma proteins
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Membrane
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 20
Cytoband q13.13
Chromosome location (bp) 49503874 - 49568137
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

1
Ensembl ENSG00000124212 (version 109)
Entrez gene 5740
HGNC HGNC:9603
UniProt Q16647 (UniProt - Evidence at protein level)
neXtProt NX_Q16647
GeneCards PTGIS
Antibodypedia PTGIS antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Catalyzes the biosynthesis and metabolism of eicosanoids. Catalyzes the isomerization of prostaglandin H2 to prostacyclin (= prostaglandin I2), a potent mediator of vasodilation and inhibitor of platelet aggregation 1, 2, 3, 4. Additionally, displays dehydratase activity, toward hydroperoxyeicosatetraenoates (HPETEs), especially toward (15S)-hydroperoxy-(5Z,8Z,11Z,13E)-eicosatetraenoate (15(S)- HPETE) 5.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Isomerase, Lyase
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Fatty acid biosynthesis, Fatty acid metabolism, Lipid biosynthesis, Lipid metabolism, Prostaglandin biosynthesis, Prostaglandin metabolism
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

Heme, Iron, Metal-binding
Gene summary (Entrez)i

Useful information about the gene from Entrez

This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. However, this protein is considered a member of the cytochrome P450 superfamily on the basis of sequence similarity rather than functional similarity. This endoplasmic reticulum membrane protein catalyzes the conversion of prostglandin H2 to prostacyclin (prostaglandin I2), a potent vasodilator and inhibitor of platelet aggregation. An imbalance of prostacyclin and its physiological antagonist thromboxane A2 contribute to the development of myocardial infarction, stroke, and atherosclerosis. [provided by RefSeq, Jul 2008]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
PTGIS-201
ENSP00000244043
ENST00000244043
Q16647
[Direct mapping] Prostacyclin synthase
Show all
Enzymes
   ENZYME proteins
   Lyases
   Isomerase
Metabolic proteins
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   1TM proteins predicted by MDM
Plasma proteins
Disease related genes
FDA approved drug targets
   Small molecule drugs
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0001516 [prostaglandin biosynthetic process]
GO:0004497 [monooxygenase activity]
GO:0005506 [iron ion binding]
GO:0005515 [protein binding]
GO:0005615 [extracellular space]
GO:0005634 [nucleus]
GO:0005783 [endoplasmic reticulum]
GO:0005789 [endoplasmic reticulum membrane]
GO:0005901 [caveola]
GO:0006629 [lipid metabolic process]
GO:0006631 [fatty acid metabolic process]
GO:0006633 [fatty acid biosynthetic process]
GO:0006690 [icosanoid metabolic process]
GO:0006693 [prostaglandin metabolic process]
GO:0008116 [prostaglandin-I synthase activity]
GO:0016020 [membrane]
GO:0016705 [oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen]
GO:0016829 [lyase activity]
GO:0016853 [isomerase activity]
GO:0019371 [cyclooxygenase pathway]
GO:0020037 [heme binding]
GO:0032088 [negative regulation of NF-kappaB transcription factor activity]
GO:0034356 [NAD biosynthesis via nicotinamide riboside salvage pathway]
GO:0035360 [positive regulation of peroxisome proliferator activated receptor signaling pathway]
GO:0045019 [negative regulation of nitric oxide biosynthetic process]
GO:0045766 [positive regulation of angiogenesis]
GO:0046872 [metal ion binding]
GO:0050728 [negative regulation of inflammatory response]
GO:0071347 [cellular response to interleukin-1]
GO:0071354 [cellular response to interleukin-6]
GO:0071456 [cellular response to hypoxia]
GO:0097190 [apoptotic signaling pathway]
GO:0106256 [hydroperoxy icosatetraenoate dehydratase activity]
GO:1900119 [positive regulation of execution phase of apoptosis]
Show all
500 aa
57.1 kDa
Yes 1

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