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P79208 (PGH2_SHEEP) Reviewed, UniProtKB/Swiss-Prot

Last modified April 3, 2013. Version 105. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Prostaglandin G/H synthase 2
EC=1.14.99.1
Alternative name(s):
Cyclooxygenase-2
Short name=COX-2
PHS II
Prostaglandin H2 synthase 2
Short name=PGH synthase 2
Short name=PGHS-2
Prostaglandin-endoperoxide synthase 2
Gene names
Name:PTGS2
Synonyms:COX2
OrganismOvis aries (Sheep)
Taxonomic identifier9940 [NCBI]
Taxonomic lineageEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Laurasiatheria › Cetartiodactyla › Ruminantia › Pecora › Bovidae › Caprinae › Ovis

Protein attributes

Sequence length603 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

Mediates the formation of prostaglandins from arachidonate. May have a role as a major mediator of inflammation and/or a role for prostanoid signaling in activity-dependent plasticity By similarity.

Catalytic activity

Arachidonate + AH2 + 2 O2 = prostaglandin H2 + A + H2O.

Cofactor

Binds 1 heme B (iron-protoporphyrin IX) group per subunit By similarity.

Pathway

Lipid metabolism; prostaglandin biosynthesis.

Subunit structure

Homodimer By similarity.

Subcellular location

Microsome membrane; Peripheral membrane protein. Endoplasmic reticulum membrane; Peripheral membrane protein.

Post-translational modification

S-nitrosylation by NOS2 (iNOS) activates enzyme activity. S-nitrosylation may take place on different Cys residues in addition to Cys-560 By similarity.

Miscellaneous

This enzyme acts both as a dioxygenase and as a peroxidase.

This enzyme is the target of nonsteroidal anti-inflammatory drugs such as aspirin.

Sequence similarities

Belongs to the prostaglandin G/H synthase family.

Contains 1 EGF-like domain.

Ontologies

Keywords
   Biological processFatty acid biosynthesis
Fatty acid metabolism
Lipid biosynthesis
Lipid metabolism
Prostaglandin biosynthesis
Prostaglandin metabolism
   Cellular componentEndoplasmic reticulum
Membrane
Microsome
   DomainSignal
   LigandHeme
Iron
Metal-binding
   Molecular functionDioxygenase
Oxidoreductase
Peroxidase
   PTMDisulfide bond
Glycoprotein
Phosphoprotein
S-nitrosylation
   Technical termDirect protein sequencing
Gene Ontology (GO)
   Biological_processcyclooxygenase pathway

Inferred from sequence or structural similarity. Source: UniProtKB

regulation of blood pressure

Inferred from sequence or structural similarity. Source: UniProtKB

response to oxidative stress

Inferred from electronic annotation. Source: InterPro

   Cellular_componentcytoplasm

Inferred from sequence or structural similarity. Source: UniProtKB

endoplasmic reticulum membrane

Inferred from electronic annotation. Source: UniProtKB-SubCell

nucleus

Inferred from sequence or structural similarity. Source: UniProtKB

   Molecular_functionheme binding

Inferred from sequence or structural similarity. Source: UniProtKB

metal ion binding

Inferred from electronic annotation. Source: UniProtKB-KW

oxidoreductase activity, acting on single donors with incorporation of molecular oxygen, incorporation of two atoms of oxygen

Inferred from electronic annotation. Source: UniProtKB-KW

peroxidase activity

Inferred from electronic annotation. Source: UniProtKB-KW

prostaglandin-endoperoxide synthase activity

Inferred from sequence or structural similarity. Source: UniProtKB

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Signal peptide1 – 1616 Ref.2
Chain17 – 603587Prostaglandin G/H synthase 2
PRO_0000023880

Regions

Domain17 – 5438EGF-like

Sites

Active site1921Proton acceptor By similarity
Active site3701For cyclooxygenase activity By similarity
Metal binding3731Iron (heme axial ligand) By similarity
Binding site1051Substrate By similarity
Binding site3401Substrate By similarity
Binding site3701Substrate By similarity
Site5151Aspirin-acetylated serine By similarity

Amino acid modifications

Modified residue4361Phosphoserine By similarity
Modified residue4451Phosphotyrosine By similarity
Modified residue5601S-nitrosocysteine By similarity
Glycosylation521N-linked (GlcNAc...) Potential
Glycosylation1291N-linked (GlcNAc...) Potential
Glycosylation3951N-linked (GlcNAc...) Potential
Glycosylation5791N-linked (GlcNAc...) Potential
Disulfide bond20 ↔ 31 By similarity
Disulfide bond21 ↔ 144 By similarity
Disulfide bond25 ↔ 41 By similarity
Disulfide bond43 ↔ 53 By similarity
Disulfide bond554 ↔ 560 By similarity

Experimental info

Sequence conflict99 – 1013RYV → GYK AA sequence Ref.2
Sequence conflict2521K → KH AA sequence Ref.2
Sequence conflict2561V → N AA sequence Ref.2
Sequence conflict5201Missing AA sequence Ref.2
Sequence conflict5281E → A AA sequence Ref.2

Sequences

Sequence LengthMass (Da)Tools
P79208 [UniParc].

Last modified May 1, 1997. Version 1.
Checksum: E27F5E0549BB1C52

FASTA60368,969
        10         20         30         40         50         60 
MLARALLLCA AVVCGAANPC CSHPCQNRGV CMSVGFDQYK CDCTRTGFYG ENCTTPEFLT 

        70         80         90        100        110        120 
RIKLLLKPTP DTVHYILTHF KGVWNIVNKI SFLRNMIMRY VLTSRSHLIE SPPTYNVHYS 

       130        140        150        160        170        180 
YKSWEAFSNL SYYTRALPPV PDDCPTPMGV KGRKELPDSK EVVKKVLLRR KFIPDPQGTN 

       190        200        210        220        230        240 
LMFAFFAQHF THQFFKTDIE RGPAFTKGKN HGVDLSHVYG ESLERQHNRR LFKDGKMKYQ 

       250        260        270        280        290        300 
MINGEMYPPT VKDTQVEMIY PPHIPEHLKF AVGQEVFGLV PGLMMYATIW LREHNRVCDV 

       310        320        330        340        350        360 
LKQEHPEWGD EQLFQTSRLI LIGETIKIVI EDYVQHLSGY HFKLKFDPEL LFNQQFQYQN 

       370        380        390        400        410        420 
RIAAEFNTLY HWHPLLPDVF QIDGQEYNYQ QFIYNNSVLL EHGVTQFVES FTRQIAGRVA 

       430        440        450        460        470        480 
GRRNLPAAVE KVSKASLDQS REMKYQSFNE YRKRFLLKPY ESFEELTGEK EMAAELEALY 

       490        500        510        520        530        540 
GDIDAMELYP ALLVEKPAPD AIFGETMVEA GAPFSLKGLM GNPICSPEYW KPSTFGGEVG 

       550        560        570        580        590        600 
FKIINTASIQ SLICSNVKGC PFTSFSVQDA HLTKTVTINA SSSHSGLDDI NPTVLLKERS 


TEL

« Hide

References

[1]"Molecular cloning, functional expression, and selective regulation of ovine prostaglandin H synthase-2."
Zhang V., O'Sullivan M., Hussain H., Roswit W.T., Holtzman M.J.
Biochem. Biophys. Res. Commun. 227:499-506(1996) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[2]"Purification and characterization of prostaglandin H synthase-2 from sheep placental cotyledons."
Johnson J.L., Wimsatt J., Buckel S.D., Dyer R.D., Maddipati K.R.
Arch. Biochem. Biophys. 324:26-34(1995) [PubMed] [Europe PMC] [Abstract]
Cited for: PROTEIN SEQUENCE OF 17-52; 99-115; 183-196; 247-257; 286-306; 444-454; 473-485 AND 508-532.
Tissue: Placenta.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		U68486 mRNA. Translation: AAC48684.1.
PIRJC5063.
RefSeqNP_001009432.1. NM_001009432.1.
UniGeneOar.642.

3D structure databases

ProteinModelPortalP79208.
SMRP79208. Positions 17-568.
ModBaseSearch...

Protein family/group databases

PeroxiBase4122. OarPGHS02.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID443460.

Organism-specific databases

CTD5743.

Phylogenomic databases

HOVERGENHBG000366.

Enzyme and pathway databases

BRENDA1.14.99.1. 4472.
UniPathwayUPA00662.

Family and domain databases

Gene3D1.10.640.10. 1 hit.
InterProIPR000742. EG-like_dom.
IPR010255. Haem_peroxidase.
IPR002007. Haem_peroxidase_animal.
IPR019791. Haem_peroxidase_animal_subgr.
[Graphical view]
PfamPF03098. An_peroxidase. 2 hits.
[Graphical view]
PRINTSPR00457. ANPEROXIDASE.
SMARTSM00181. EGF. 1 hit.
[Graphical view]
SUPFAMSSF48113. Peroxidase_super. 1 hit.
PROSITEPS00022. EGF_1. False negative.
PS01186. EGF_2. False negative.
PS50026. EGF_3. 1 hit.
PS50292. PEROXIDASE_3. 1 hit.
[Graphical view]
ProtoNetSearch...

Other

BindingDBP79208.
ChEMBLCHEMBL4102.

Entry information

Entry namePGH2_SHEEP
AccessionPrimary (citable) accession number: P79208
Entry history
Integrated into UniProtKB/Swiss-Prot: December 15, 1998
Last sequence update: May 1, 1997
Last modified: April 3, 2013
This is version 105 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Relevant documents

PATHWAY comments

Index of metabolic and biosynthesis pathways

SIMILARITY comments

Index of protein domains and families

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