Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Cytosolic phospholipase A2

Gene

PLA2G4A

Organism
Equus caballus (Horse)
Status
Reviewed-Annotation score: 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.

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)DescriptionActionsGraphical viewLength
Metal bindingi40Calcium 1By similarity1
Metal bindingi40Calcium 2By similarity1
Metal bindingi41Calcium 1; via carbonyl oxygenBy similarity1
Metal bindingi43Calcium 1By similarity1
Metal bindingi43Calcium 2By similarity1
Metal bindingi65Calcium 1By similarity1
Metal bindingi93Calcium 2By similarity1
Metal bindingi94Calcium 2; via carbonyl oxygenBy similarity1
Metal bindingi95Calcium 2By similarity1
Active sitei228NucleophileBy similarity1
Active sitei549Proton acceptorBy similarity1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Hydrolase

Keywords - Biological processi

Lipid degradation, Lipid metabolism

Keywords - Ligandi

Calcium, Metal-binding

Enzyme and pathway databases

BRENDAi3.1.1.4. 2120.

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
OrganismiEquus caballus (Horse)
Taxonomic identifieri9796 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaPerissodactylaEquidaeEquus
Proteomesi
  • UP000002281 Componenti: Unplaced

Subcellular locationi

  • Cytoplasm By similarity
  • Cytoplasmic vesicle By similarity

  • Note: Translocates to membrane vesicles in a calcium-dependent fashion.By similarity

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Cytoplasmic vesicle

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001872611 – 749Cytosolic phospholipase A2Add BLAST749

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei2PhosphoserineBy similarity1
Modified residuei268PhosphothreonineBy similarity1
Modified residuei434PhosphoserineBy similarity1
Modified residuei435PhosphoserineBy similarity1
Modified residuei437PhosphoserineBy similarity1
Modified residuei505Phosphoserine; by MAPKBy similarity1
Modified residuei515PhosphoserineBy similarity1
Modified residuei727PhosphoserineBy similarity1
Modified residuei729PhosphoserineBy similarity1

Post-translational modificationi

Activated by phosphorylation at both Ser-505 and Ser-727.By similarity

Keywords - PTMi

Phosphoprotein

Proteomic databases

PaxDbiO77793.
PRIDEiO77793.

Interactioni

Protein-protein interaction databases

STRINGi9796.ENSECAP00000022445.

Structurei

3D structure databases

ProteinModelPortaliO77793.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini5 – 106C2PROSITE-ProRule annotationAdd BLAST102
Domaini140 – 740PLA2cPROSITE-ProRule annotationAdd BLAST601

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni1 – 178Phospholipid bindingCuratedAdd BLAST178

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).By similarity

Sequence similaritiesi

Contains 1 C2 domain.PROSITE-ProRule annotation
Contains 1 PLA2c domain.PROSITE-ProRule annotation

Phylogenomic databases

eggNOGiKOG1012. Eukaryota.
KOG1325. Eukaryota.
ENOG410XR72. LUCA.
HOGENOMiHOG000115420.
HOVERGENiHBG053479.
InParanoidiO77793.
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.

O77793-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSFIDPYQHI IVEHQYSHKF TVVVLRATKV TKGAFGDMLD TPDPYVELFI
60 70 80 90 100
SSTPDSRKRT RHFNNNINPV WNETFEFILD PNQENVLEIT LMDANYVMDE
110 120 130 140 150
TLGTATFTLS SMKVGEKKEV PFIFNQVTEM ILEMSLEVCS CPDLRFSMAL
160 170 180 190 200
CDQEKTFRQQ RKENIKENMK KLLGPKKSEG LYSTRDVPVV AILGSGGGFR
210 220 230 240 250
AMVGFSGVMK ALYESGILDC ATYLAGLSGS SWYMSTLYSH PDFPEKGPEE
260 270 280 290 300
INKELMKNVS YDPLLLLTPQ KIKRYVESLW KKKSSGQPVT FTDIFGMLIG
310 320 330 340 350
ETLIHNRMNT TLSSLKEKVN TAQCPLPLFT CLHVKPDVSE LMFADWVEFS
360 370 380 390 400
PYEIGMAKYG TFMAPDLFGS KFFMGTVVKK YEENPLHFLM GVWGSAFSIL
410 420 430 440 450
FNRVLGVSGS QNKGSTMEEE LENITAKHIV SNDSSDSDDE SQEPKGTENE
460 470 480 490 500
DAERDYQNDN QASWVHRMLM ALVSDSALFN TREGRAGKVH NFMLGLNLNT
510 520 530 540 550
SYPLSPLRNF TTQESLDDDE LDAAVADPDE FERIYEPLDV KSKKIHVVDS
560 570 580 590 600
GLTFNLPYPL ILRPQRGVDL IISFDFSARP SDSSPPFKEL LLAEKWAKMN
610 620 630 640 650
KLPFPKIDPY VFDREGLKEC YVFKPKNPDV EKDCPTIIHF VLANINFRKY
660 670 680 690 700
KAPGVPRETK EEKEIADFDI FDDPESPFST FNFQYPNQAF KRLHDLMHFN
710 720 730 740
TLNNIDVIKN AMVESIEYRR QNPSRCSVSL SNVEARRFFN KEFLNKPTA
Length:749
Mass (Da):85,454
Last modified:November 1, 1998 - v1
Checksum:i493A67DF28D50FE0
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF092539 mRNA. Translation: AAC61774.1.
RefSeqiNP_001075312.1. NM_001081843.1.
UniGeneiEca.12988.

Genome annotation databases

GeneIDi100033889.
KEGGiecb:100033889.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF092539 mRNA. Translation: AAC61774.1.
RefSeqiNP_001075312.1. NM_001081843.1.
UniGeneiEca.12988.

3D structure databases

ProteinModelPortaliO77793.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi9796.ENSECAP00000022445.

Proteomic databases

PaxDbiO77793.
PRIDEiO77793.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi100033889.
KEGGiecb:100033889.

Organism-specific databases

CTDi5321.

Phylogenomic databases

eggNOGiKOG1012. Eukaryota.
KOG1325. Eukaryota.
ENOG410XR72. LUCA.
HOGENOMiHOG000115420.
HOVERGENiHBG053479.
InParanoidiO77793.
KOiK16342.

Enzyme and pathway databases

BRENDAi3.1.1.4. 2120.

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]
ProtoNetiSearch...

Entry informationi

Entry nameiPA24A_HORSE
AccessioniPrimary (citable) accession number: O77793
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 15, 1999
Last sequence update: November 1, 1998
Last modified: October 5, 2016
This is version 100 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

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.