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B1WAZ6

- PA24A_XENTR

UniProt

B1WAZ6 - PA24A_XENTR

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Protein
Cytosolic phospholipase A2
Gene
pla2g4a, cpla2, pla2g4
Organism
Xenopus tropicalis (Western clawed frog) (Silurana tropicalis)
Status
Reviewed - Annotation score: 4 out of 5 - Experimental evidence at transcript leveli

Functioni

Selectively hydrolyzes arachidonyl phospholipids in the sn-2 position releasing arachidonic acid. Together with its lysophospholipid activity, it is implicated in the initiation of the inflammatory response By similarity.

Catalytic activityi

Phosphatidylcholine + H2O = 1-acylglycerophosphocholine + a carboxylate.
2-lysophosphatidylcholine + H2O = glycerophosphocholine + a carboxylate.

Enzyme regulationi

Stimulated by agonists such as ATP, EGF, thrombin and bradykinin as well as by cytosolic Ca2+ By similarity.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi40 – 401Calcium 1 By similarity
Metal bindingi40 – 401Calcium 2 By similarity
Metal bindingi41 – 411Calcium 1; via carbonyl oxygen By similarity
Metal bindingi43 – 431Calcium 1 By similarity
Metal bindingi43 – 431Calcium 2 By similarity
Metal bindingi65 – 651Calcium 1 By similarity
Metal bindingi93 – 931Calcium 2 By similarity
Metal bindingi94 – 941Calcium 2; via carbonyl oxygen By similarity
Metal bindingi95 – 951Calcium 2 By similarity
Active sitei229 – 2291Nucleophile By similarity
Active sitei549 – 5491Proton acceptor By similarity

GO - Molecular functioni

  1. lysophospholipase activity Source: UniProtKB-EC
  2. metal ion binding Source: UniProtKB-KW
  3. phospholipase A2 activity Source: UniProtKB-EC
Complete GO annotation...

GO - Biological processi

  1. phospholipid catabolic process Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Hydrolase

Keywords - Biological processi

Lipid degradation, Lipid metabolism

Keywords - Ligandi

Calcium, Metal-binding

Enzyme and pathway databases

ReactomeiREACT_195675. Synthesis of PA.
REACT_195855. Arachidonic acid metabolism.
REACT_209771. ADP signalling through P2Y purinoceptor 1.
REACT_213252. Acyl chain remodelling of PE.
REACT_217968. Acyl chain remodelling of PG.
REACT_220193. Acyl chain remodelling of PI.
REACT_221262. Acyl chain remodelling of PC.
REACT_224622. Acyl chain remodelling of PS.
REACT_225195. Platelet sensitization by LDL.
REACT_225940. Acyl chain remodeling of CL.
REACT_226278. Hydrolysis of LPC.

Names & Taxonomyi

Protein namesi
Recommended name:
Cytosolic phospholipase A2
Short name:
cPLA2
Alternative name(s):
Phospholipase A2 group IVA
Including the following 2 domains:
Phospholipase A2 (EC:3.1.1.4)
Alternative name(s):
Phosphatidylcholine 2-acylhydrolase
Lysophospholipase (EC:3.1.1.5)
Gene namesi
Name:pla2g4a
Synonyms:cpla2, pla2g4
OrganismiXenopus tropicalis (Western clawed frog) (Silurana tropicalis)
Taxonomic identifieri8364 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiAmphibiaBatrachiaAnuraPipoideaPipidaeXenopodinaeXenopusSilurana
ProteomesiUP000008143: Unplaced

Organism-specific databases

XenbaseiXB-GENE-5838849. pla2g4a.

Subcellular locationi

Cytoplasm By similarity. Cytoplasmic vesicle By similarity
Note: Translocates to membrane vesicles in a calcium-dependent fashion By similarity.

GO - Cellular componenti

  1. cytoplasmic membrane-bounded vesicle Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Cytoplasmic vesicle

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 749749Cytosolic phospholipase A2
PRO_0000345137Add
BLAST

Expressioni

Gene expression databases

BgeeiB1WAZ6.

Interactioni

Protein-protein interaction databases

STRINGi8364.ENSXETP00000037820.

Structurei

3D structure databases

ProteinModelPortaliB1WAZ6.
SMRiB1WAZ6. Positions 13-721.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini5 – 106102C2
Add
BLAST
Domaini138 – 740603PLA2c
Add
BLAST

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni1 – 178178Phospholipid binding Inferred
Add
BLAST

Domaini

The N-terminal C2 domain associates with lipid membranes upon calcium binding. It modulates enzyme activity by presenting the active site to its substrate in response to elevations of cytosolic Ca2+ By similarity.

Sequence similaritiesi

Contains 1 C2 domain.
Contains 1 PLA2c domain.

Phylogenomic databases

eggNOGiNOG257248.
HOGENOMiHOG000115420.
HOVERGENiHBG053479.
KOiK16342.

Family and domain databases

Gene3Di2.60.40.150. 1 hit.
InterProiIPR016035. Acyl_Trfase/lysoPLipase.
IPR000008. C2_dom.
IPR002642. LysoPLipase_cat_dom.
[Graphical view]
PfamiPF00168. C2. 1 hit.
PF01735. PLA2_B. 1 hit.
[Graphical view]
SMARTiSM00239. C2. 1 hit.
SM00022. PLAc. 1 hit.
[Graphical view]
SUPFAMiSSF49562. SSF49562. 1 hit.
SSF52151. SSF52151. 1 hit.
PROSITEiPS50004. C2. 1 hit.
PS51210. PLA2C. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

B1WAZ6-1 [UniParc]FASTAAdd to Basket

« Hide

MASIDPYQHI IVEHQYSHRF TVTVIKATNV TKGTFGDMLD TPDPYVELYI    50
SSAPDSRKRT KHFNNNINPV WNETFEFILD PNQDNVLEIT LMDANYVMDE 100
SLGTTTFPIS SVKPGEKKQV PFTFNKVTEM ILEFLLEVCS STDLRFSMAL 150
CDQEKFFRQK RKNQVINGLR KLLGPEKTKD LNPTSRDVPV IAVLGSGGGF 200
RAMIGFSGVM KALFESGVLD CVTYIAGLSG STWYMSALYS HADFPNKGPK 250
EINKELMNNV SHNPLLLLTP QKVKRYIEAL WKKKSSGQPV TFTDIFAMLI 300
GETLIKDRMN RKLSHMQEKI SHGQCPLPLF TCLHVKPDVS ELMFADWVEF 350
SPYEIGMAKY GTFMPPDHFG SKFFMGTVIK KYEENPLHFL MGVWGSAFSI 400
LINRVLGVST NNQGSTMEEE IENLKPKHIL GNDSSDSDDE MQEPKGTENS 450
KAEEEYQRNN QASWVQRMLM ALLGDSALFN TREGRAGKVH NFMLGLNLNT 500
SYPYSPLSGL CTQQSMEEDE FDAAVADPDE FEQIYEPLDV KSKKIHIVDS 550
GLTFNLPYPL ILRPQRGVDL IISFDFSARP SDSSPPFKEL LLAEKWARMN 600
KLPFPKIDPH VFDREGLKEC YIFKPKNPSV EKDCPTVIHF VLANLQFRNF 650
KAPGVPRETA EEKEFADFDI FDDPETPFST FNFQYPNEAF KRLHDLMEFN 700
TLNNINVIKQ AMVESIEYRK QHPSRCSVSL NDVEARKLLH KDSQSKFQM 749
Length:749
Mass (Da):85,413
Last modified:May 20, 2008 - v1
Checksum:i18EC0E15ED902CAE
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
BC161557 mRNA. Translation: AAI61557.1.
RefSeqiNP_001120577.1. NM_001127105.1.
UniGeneiStr.52630.

Genome annotation databases

GeneIDi100145731.
KEGGixtr:100145731.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
BC161557 mRNA. Translation: AAI61557.1 .
RefSeqi NP_001120577.1. NM_001127105.1.
UniGenei Str.52630.

3D structure databases

ProteinModelPortali B1WAZ6.
SMRi B1WAZ6. Positions 13-721.
ModBasei Search...

Protein-protein interaction databases

STRINGi 8364.ENSXETP00000037820.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

GeneIDi 100145731.
KEGGi xtr:100145731.

Organism-specific databases

CTDi 5321.
Xenbasei XB-GENE-5838849. pla2g4a.

Phylogenomic databases

eggNOGi NOG257248.
HOGENOMi HOG000115420.
HOVERGENi HBG053479.
KOi K16342.

Enzyme and pathway databases

Reactomei REACT_195675. Synthesis of PA.
REACT_195855. Arachidonic acid metabolism.
REACT_209771. ADP signalling through P2Y purinoceptor 1.
REACT_213252. Acyl chain remodelling of PE.
REACT_217968. Acyl chain remodelling of PG.
REACT_220193. Acyl chain remodelling of PI.
REACT_221262. Acyl chain remodelling of PC.
REACT_224622. Acyl chain remodelling of PS.
REACT_225195. Platelet sensitization by LDL.
REACT_225940. Acyl chain remodeling of CL.
REACT_226278. Hydrolysis of LPC.

Gene expression databases

Bgeei B1WAZ6.

Family and domain databases

Gene3Di 2.60.40.150. 1 hit.
InterProi IPR016035. Acyl_Trfase/lysoPLipase.
IPR000008. C2_dom.
IPR002642. LysoPLipase_cat_dom.
[Graphical view ]
Pfami PF00168. C2. 1 hit.
PF01735. PLA2_B. 1 hit.
[Graphical view ]
SMARTi SM00239. C2. 1 hit.
SM00022. PLAc. 1 hit.
[Graphical view ]
SUPFAMi SSF49562. SSF49562. 1 hit.
SSF52151. SSF52151. 1 hit.
PROSITEi PS50004. C2. 1 hit.
PS51210. PLA2C. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. NIH - Xenopus Gene Collection (XGC) project
    Submitted (APR-2008) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
    Strain: N6.
    Tissue: Intestine.

Entry informationi

Entry nameiPA24A_XENTR
AccessioniPrimary (citable) accession number: B1WAZ6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 22, 2008
Last sequence update: May 20, 2008
Last modified: September 3, 2014
This is version 35 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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