2IAG

Crystal structure of human prostacyclin synthase

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2iaga1	All alpha proteins	Cytochrome P450	Cytochrome P450	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2iaga2	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d2iagb1	All alpha proteins	Cytochrome P450	Cytochrome P450	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d2iagb2	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	p450	e2iagA1	A: alpha arrays	X: Cytochrome P450 (From Topology)	H: Cytochrome P450 (From Topology)	T: Cytochrome P450	F: p450	ECOD (1.6)
B	p450	e2iagB1	A: alpha arrays	X: Cytochrome P450 (From Topology)	H: Cytochrome P450 (From Topology)	T: Cytochrome P450	F: p450	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.630.10	Mainly Alpha	Orthogonal Bundle	Cytochrome p450	Cytochrome P450	CATH (4.3.0)
B	1.10.630.10	Mainly Alpha	Orthogonal Bundle	Cytochrome p450	Cytochrome P450	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00067	Cytochrome P450 (p450)	Cytochrome P450	Cytochrome P450s are haem-thiolate proteins [6] involved in the oxidative degradation of various compounds. They are particularly well known for their role in the degradation of environmental toxins and mutagens. They can be divided into 4 classes, a ...	Cytochrome P450s are haem-thiolate proteins [6] involved in the oxidative degradation of various compounds. They are particularly well known for their role in the degradation of environmental toxins and mutagens. They can be divided into 4 classes, according to the method by which electrons from NAD(P)H are delivered to the catalytic site. Sequence conservation is relatively low within the family - there are only 3 absolutely conserved residues - but their general topography and structural fold are highly conserved. The conserved core is composed of a coil termed the 'meander', a four-helix bundle, helices J and K, and two sets of beta-sheets. These constitute the haem-binding loop (with an absolutely conserved cysteine that serves as the 5th ligand for the haem iron), the proton-transfer groove and the absolutely conserved EXXR motif in helix K. While prokaryotic P450s are soluble proteins, most eukaryotic P450s are associated with microsomal membranes. their general enzymatic function is to catalyse regiospecific and stereospecific oxidation of non-activated hydrocarbons at physiological temperatures [6].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Prostacyclin synthase	monooxygenase activity oxidoreductase activity catalytic activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen hydroperoxy icosatetraenoate dehydratase activity hydro-lyase activity lyase activity carbon-oxygen lyase activity prostaglandin-I synthase activity isomerase activity intramolecular oxidoreductase activity binding tetrapyrrole binding heme binding monooxygenase activity oxidoreductase activity catalytic activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen hydroperoxy icosatetraenoate dehydratase activity hydro-lyase activity lyase activity carbon-oxygen lyase activity prostaglandin-I synthase activity isomerase activity intramolecular oxidoreductase activity binding tetrapyrrole binding heme binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding small molecule binding	icosanoid metabolic process oxoacid metabolic process carboxylic acid metabolic process small molecule metabolic process metabolic process cellular process organic acid metabolic process response to decreased oxygen levels cellular response to stimulus response to stimulus cellular response to oxygen levels cellular response to hypoxia cellular response to decreased oxygen levels cellular response to chemical stimulus icosanoid metabolic process oxoacid metabolic process carboxylic acid metabolic process small molecule metabolic process metabolic process cellular process organic acid metabolic process response to decreased oxygen levels cellular response to stimulus response to stimulus cellular response to oxygen levels cellular response to hypoxia cellular response to decreased oxygen levels cellular response to chemical stimulus cellular response to stress response to hypoxia response to stress response to chemical response to oxygen levels response to abiotic stimulus prostaglandin metabolic process unsaturated fatty acid metabolic process lipid biosynthetic process organic acid biosynthetic process carboxylic acid biosynthetic process prostanoid metabolic process icosanoid biosynthetic process prostaglandin biosynthetic process prostanoid biosynthetic process fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process primary metabolic process fatty acid biosynthetic process unsaturated fatty acid biosynthetic process biosynthetic process monocarboxylic acid metabolic process lipid metabolic process regulation of defense response regulation of biological process regulation of response to external stimulus negative regulation of inflammatory response defense response negative regulation of response to stimulus biological regulation negative regulation of biological process response to external stimulus regulation of inflammatory response regulation of response to stimulus negative regulation of response to external stimulus regulation of response to stress negative regulation of defense response inflammatory response regulation of biosynthetic process regulation of nitric oxide biosynthetic process regulation of cellular process negative regulation of metabolic process negative regulation of nitric oxide metabolic process reactive nitrogen species metabolic process nitric oxide metabolic process nitric oxide biosynthetic process negative regulation of nitric oxide biosynthetic process negative regulation of biosynthetic process negative regulation of cellular process regulation of nitric oxide metabolic process regulation of metabolic process positive regulation of programmed cell death regulation of apoptotic process positive regulation of biological process regulation of programmed cell death cell death positive regulation of apoptotic process regulation of execution phase of apoptosis positive regulation of execution phase of apoptosis execution phase of apoptosis apoptotic process programmed cell death positive regulation of cellular process negative regulation of DNA-binding transcription factor activity RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process negative regulation of NF-kappaB transcription factor activity nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of molecular function regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of molecular function regulation of gene expression regulation of DNA-binding transcription factor activity regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process positive regulation of cell communication positive regulation of signal transduction intracellular receptor signaling pathway signaling regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction signal transduction positive regulation of peroxisome proliferator activated receptor signaling pathway regulation of signaling positive regulation of intracellular signal transduction peroxisome proliferator activated receptor signaling pathway regulation of cell communication regulation of peroxisome proliferator activated receptor signaling pathway nuclear receptor-mediated signaling pathway positive regulation of signaling glycosyl compound metabolic process pyridine nucleotide salvage nucleotide biosynthetic process carbohydrate derivative metabolic process NAD metabolic process NAD biosynthesis via nicotinamide riboside salvage pathway nucleotide salvage metabolic compound salvage NAD biosynthetic process via the salvage pathway purine nucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine nucleotide salvage phosphate-containing compound metabolic process pyridine-containing compound metabolic process phosphorus metabolic process pyridine nucleotide metabolic process NAD biosynthetic process pyridine nucleotide biosynthetic process nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process nicotinamide riboside metabolic process purine-containing compound salvage pyridine-containing compound biosynthetic process nucleotide metabolic process nucleoside metabolic process purine-containing compound metabolic process nicotinamide nucleotide biosynthetic process organophosphate metabolic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process pyridine nucleoside metabolic process purine nucleotide biosynthetic process response to peptide response to interleukin-6 cellular response to interleukin-6 response to cytokine cellular response to cytokine stimulus multicellular organismal process regulation of developmental process angiogenesis regulation of vasculature development positive regulation of developmental process multicellular organism development tube morphogenesis anatomical structure development regulation of multicellular organismal process regulation of anatomical structure morphogenesis blood vessel development system development developmental process regulation of multicellular organismal development blood vessel morphogenesis tube development positive regulation of angiogenesis vasculature development circulatory system development anatomical structure morphogenesis positive regulation of vasculature development regulation of angiogenesis anatomical structure formation involved in morphogenesis positive regulation of multicellular organismal process apoptotic signaling pathway arachidonate metabolic process long-chain fatty acid metabolic process cyclooxygenase pathway olefinic compound metabolic process cellular response to interleukin-1 response to interleukin-1	membrane microdomain cell periphery membrane raft cellular anatomical structure plasma membrane raft membrane plasma membrane plasma membrane region caveola membrane-bounded organelle intracellular anatomical structure organelle subcompartment intracellular membrane-bounded organelle endomembrane system membrane microdomain cell periphery membrane raft cellular anatomical structure plasma membrane raft membrane plasma membrane plasma membrane region caveola membrane-bounded organelle intracellular anatomical structure organelle subcompartment intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum membrane extracellular region extracellular space nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR002403	Cytochrome P450, E-class, group IV	Family
A, B	IPR027286	Prostacyclin synthase	Family
A, B	IPR024204	Cytochrome P450, cholesterol 7-alpha-monooxygenase-type	Family
A, B	IPR001128	Cytochrome P450	Family
A, B	IPR036396	Cytochrome P450 superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q16647	essential hypertension patent ductus arteriosus Stevens-Johnson syndrome lung cancer malignant colon neoplasm malignant pancreatic neoplasm non-small cell lung carcinoma Abortion, Spontaneous pancreatic ductal adenocarcinoma atopic eczema pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia breast carcinoma peripheral nervous system disease toxic epidermal necrolysis Gaucher disease essential hypertension patent ductus arteriosus Stevens-Johnson syndrome lung cancer malignant colon neoplasm malignant pancreatic neoplasm non-small cell lung carcinoma Abortion, Spontaneous pancreatic ductal adenocarcinoma atopic eczema pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia breast carcinoma peripheral nervous system disease toxic epidermal necrolysis Gaucher disease lung adenocarcinoma lung carcinoma malignant mesothelioma medulloblastoma osteosarcoma pancreatic intraductal papillary-mucinous carcinoma atypical teratoid rhabdoid tumor peripheral neuropathy ductal breast carcinoma in situ essential hypertension, genetic hypertensive disorder lung benign neoplasm ovarian cancer adrenal cortex carcinoma pancreatic intraductal papillary-mucinous neoplasm breast cancer cystic fibrosis psoriasis endogenous depression gastric carcinoma invasive ductal breast carcinoma

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.