1L8S

CARBOXYLIC ESTER HYDROLASE COMPLEX (DIMERIC PLA2 + LPC-ether + ACETATE + PHOSPHATE IONS)

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Structure Motif: Primary M-CSA Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1l8sa_	All alpha proteins	Phospholipase A2, PLA2	Phospholipase A2, PLA2	Vertebrate phospholipase A2	Phospholipase A2	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
B	d1l8sb_	All alpha proteins	Phospholipase A2, PLA2	Phospholipase A2, PLA2	Vertebrate phospholipase A2	Phospholipase A2	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Phospholipase A2, PLA2	8036500	3001690	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Phospholipase A2, PLA2	8036500	3001690	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Phospholip_A2_1	e1l8sA1	A: few secondary structure elements	X: Phospholipase A2, PLA2 (From Topology)	H: Phospholipase A2, PLA2 (From Topology)	T: Phospholipase A2, PLA2	F: Phospholip_A2_1	ECOD (1.6)
B	Phospholip_A2_1	e1l8sB1	A: few secondary structure elements	X: Phospholipase A2, PLA2 (From Topology)	H: Phospholipase A2, PLA2 (From Topology)	T: Phospholipase A2, PLA2	F: Phospholip_A2_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.90.10	Mainly Alpha	Up-down Bundle	Phospholipase A2	Phospholipase A2 domain	CATH (4.3.0)
B	1.20.90.10	Mainly Alpha	Up-down Bundle	Phospholipase A2	Phospholipase A2 domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00068	Phospholipase A2 (Phospholip_A2_1)	Phospholipase A2	Phospholipase A2 releases fatty acids from the second carbon group of glycerol. Perhaps the best known members are secreted snake venoms, but also found in secreted pancreatic and membrane-associated forms. Structure is all-alpha, with two core disul ...	Phospholipase A2 releases fatty acids from the second carbon group of glycerol. Perhaps the best known members are secreted snake venoms, but also found in secreted pancreatic and membrane-associated forms. Structure is all-alpha, with two core disulfide-linked helices and a calcium-binding loop. This alignment represents the major family of PLA2s. A second minor family, defined by the honeybee venom PLA2 PDB:1POC and related sequences from Gila monsters (Heloderma), is not recognised. This minor family conserves the core helix pair but is substantially different elsewhere. The PROSITE pattern PA2_HIS, specific to the first core helix, recognises both families.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	PHOSPHOLIPASE A2, MAJOR ISOENZYME	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding protein binding signaling receptor binding phospholipase A2 activity hydrolase activity, acting on ester bonds carboxylic ester hydrolase activity hydrolase activity catalytic activity phospholipase activity cation binding ion binding binding calcium ion binding metal ion binding small molecule binding protein binding signaling receptor binding phospholipase A2 activity hydrolase activity, acting on ester bonds carboxylic ester hydrolase activity hydrolase activity catalytic activity phospholipase activity lipase activity bile acid binding organic acid binding anion binding carboxylic acid binding monocarboxylic acid binding calcium-dependent phospholipase A2 activity phospholipid binding lipid binding	regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process positive regulation of response to stimulus positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process icosanoid metabolic process leukotriene metabolic process regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process positive regulation of response to stimulus positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process icosanoid metabolic process leukotriene metabolic process oxoacid metabolic process small molecule biosynthetic process leukotriene biosynthetic process carboxylic acid metabolic process organic acid metabolic process organic acid biosynthetic process carboxylic acid biosynthetic process biosynthetic process icosanoid biosynthetic process small molecule metabolic process metabolic process cellular process phospholipid metabolic process organophosphate metabolic process phosphate-containing compound metabolic process primary metabolic process phosphorus metabolic process lipid metabolic process neutrophil mediated immunity leukocyte mediated immunity myeloid leukocyte mediated immunity immune effector process regulation of localization hexose transmembrane transport D-glucose import regulation of cellular process regulation of transport transport carbohydrate transport establishment of localization transmembrane transport localization regulation of transmembrane transport D-glucose transmembrane transport regulation of D-glucose transmembrane transport monosaccharide transmembrane transport carbohydrate transmembrane transport regulation of D-glucose import fibroblast proliferation cell population proliferation positive regulation of cell population proliferation regulation of fibroblast proliferation regulation of cell population proliferation positive regulation of fibroblast proliferation positive regulation of cellular process cell chemotaxis cellular response to stimulus chemotaxis neutrophil chemotaxis response to external stimulus neutrophil migration granulocyte migration leukocyte migration cellular response to chemical stimulus taxis granulocyte chemotaxis response to chemical myeloid leukocyte migration cell migration cell motility leukocyte chemotaxis locomotion phosphatidylglycerol metabolic process glycerophospholipid metabolic process glycerolipid metabolic process phosphatidylcholine metabolic process positive regulation of epithelial cell apoptotic process positive regulation of programmed cell death regulation of epithelial cell apoptotic process regulation of apoptotic process regulation of programmed cell death podocyte apoptotic process regulation of podocyte apoptotic process cell death positive regulation of apoptotic process epithelial cell apoptotic process positive regulation of podocyte apoptotic process apoptotic process programmed cell death multicellular organismal process positive regulation of interleukin-8 production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process cytokine production regulation of cytokine production regulation of multicellular organismal process positive regulation of macromolecule metabolic process regulation of biosynthetic process interleukin-8 production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression positive regulation of gene expression positive regulation of multicellular organismal process regulation of macromolecule biosynthetic process macromolecule metabolic process positive regulation of cytokine production regulation of metabolic process regulation of interleukin-8 production lipid catabolic process catabolic process positive regulation of cell communication positive regulation of signal transduction positive regulation of phosphorylation regulation of catalytic activity regulation of signal transduction regulation of transferase activity positive regulation of phosphate metabolic process regulation of MAP kinase activity intracellular signal transduction regulation of primary metabolic process cell communication positive regulation of protein serine/threonine kinase activity regulation of phosphate metabolic process intracellular signaling cassette signal transduction protein modification process positive regulation of protein phosphorylation positive regulation of MAP kinase activity protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation positive regulation of MAPK cascade regulation of protein metabolic process positive regulation of intracellular signal transduction regulation of MAPK cascade regulation of molecular function positive regulation of kinase activity regulation of kinase activity regulation of protein serine/threonine kinase activity macromolecule modification regulation of phosphorus metabolic process regulation of protein modification process regulation of protein phosphorylation signaling positive regulation of protein metabolic process positive regulation of molecular function positive regulation of protein modification process regulation of intracellular signal transduction protein metabolic process positive regulation of protein kinase activity regulation of signaling positive regulation of transferase activity positive regulation of catalytic activity regulation of protein kinase activity MAPK cascade regulation of cell communication regulation of phosphorylation positive regulation of signaling positive regulation of DNA-binding transcription factor activity positive regulation of NF-kappaB transcription factor activity RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process regulation of DNA-binding transcription factor activity regulation of DNA-templated transcription fatty acid metabolic process monocarboxylic acid biosynthetic process lipid biosynthetic process fatty acid biosynthetic process monocarboxylic acid metabolic process regulation of calcium ion transport positive regulation of cation transmembrane transport positive regulation of calcium ion transport cellular localization regulation of calcium ion transport into cytosol monoatomic ion transmembrane transport regulation of monoatomic ion transmembrane transport calcium ion transport metal ion transport monoatomic cation transmembrane transport regulation of calcium ion transmembrane transport positive regulation of monoatomic ion transport positive regulation of calcium ion transmembrane transport positive regulation of transmembrane transport monoatomic ion transport positive regulation of monoatomic ion transmembrane transport regulation of biological quality monoatomic cation transport regulation of metal ion transport calcium ion transmembrane import into cytosol regulation of monoatomic ion transport positive regulation of cytosolic calcium ion concentration inorganic ion transmembrane transport inorganic cation transmembrane transport positive regulation of calcium ion transport into cytosol positive regulation of transport regulation of cellular localization regulation of monoatomic cation transmembrane transport calcium ion transmembrane transport calcium ion transport into cytosol cellular response to nitrogen compound response to endogenous stimulus response to peptide hormone response to oxygen-containing compound cellular response to peptide hormone stimulus response to nitrogen compound cellular response to oxygen-containing compound cellular response to endogenous stimulus response to hormone response to insulin cellular response to insulin stimulus cellular response to hormone stimulus positive regulation of DNA-templated transcription transcription by RNA polymerase II regulation of transcription by RNA polymerase II positive regulation of nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process	cell surface cellular anatomical structure extracellular region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR033112	Phospholipase A2, aspartic acid active site	Active Site
A, B	IPR033113	Phospholipase A2, histidine active site	Active Site
A, B	IPR001211	Phospholipase A2	Family
A, B	IPR036444	Phospholipase A2 domain superfamily	Homologous Superfamily
A, B	IPR016090	Phospholipase A2 domain	Domain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
B	phospholipase A2 (group IB) M-CSA #83	PLA2 catalyses the hydroylsis of the 2-acyl ester of 1,2-diacylphosphatides. Two forms of PLA2 are known: the small secretory PLA2s which are amphipathic molecules usually found associated with lipid membranes, and the larger cytosolic forms. This annotation is for the small secretory form. Secretory PLA2s form part of the neurotoxic component of many snake and bee venoms due to its ability to block acetylcholine release. Secretory PLA2s have been divided into 3 main groups: I, II, and III. Class I (present in some snake venoms and in mammalian exocrine pancrease) and II (present in some snake venoms and also broadly distributed among a variety of mammalian cell types) are closely related to each other. The class III enzymes (including venom enzymes from the honeybee and the Gila monster) appear to form a separate divergent group though their active site and mechanism is similar. The key catalytic histidine and aspartate are in very similar orientations however the residues making up the rest of the hydrogen bond network are not conserved spatially.	Defined by 8 residues: TYR:B-28GLY:B-30GLY:B-32HIS:B-48ASP:B-49TYR:B-52TYR:B-73ASP:B-99 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 3.1.1.4 (PDB Primary Data) Search M-CSA Motif + EC 3.1.1.4

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.