PA2A_GLOUS
ID PA2A_GLOUS Reviewed; 124 AA.
AC Q7LZQ4;
DT 10-MAY-2004, integrated into UniProtKB/Swiss-Prot.
DT 15-DEC-2003, sequence version 1.
DT 03-AUG-2022, entry version 76.
DE RecName: Full=Acidic phospholipase A2;
DE Short=svPLA2;
DE EC=3.1.1.4;
DE AltName: Full=Phosphatidylcholine 2-acylhydrolase;
OS Gloydius ussuriensis (Ussuri mamushi) (Gloydius blomhoffii ussuriensis).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera;
OC Serpentes; Colubroidea; Viperidae; Crotalinae; Gloydius.
OX NCBI_TaxID=35671;
RN [1]
RP PROTEIN SEQUENCE, AND FUNCTION.
RC TISSUE=Venom;
RA Terada S.;
RT "Purification and amino acid sequence of acidic phospholipase A2 with
RT platelet aggregation inhibitory activity from the venom of Agkistrodon
RT ussuriensis.";
RL Fukuoka Univ. Sci. Rep. 29:119-126(1999).
CC -!- FUNCTION: Snake venom phospholipase A2 (PLA2) that inhibits ADP-induced
CC platelet aggregation. PLA2 catalyzes the calcium-dependent hydrolysis
CC of the 2-acyl groups in 3-sn-phosphoglycerides. {ECO:0000269|Ref.1}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1-acyl-sn-
CC glycero-3-phosphocholine + a fatty acid + H(+); Xref=Rhea:RHEA:15801,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:28868,
CC ChEBI:CHEBI:57643, ChEBI:CHEBI:58168; EC=3.1.1.4;
CC Evidence={ECO:0000255|PROSITE-ProRule:PRU10035, ECO:0000255|PROSITE-
CC ProRule:PRU10036};
CC -!- COFACTOR:
CC Name=Ca(2+); Xref=ChEBI:CHEBI:29108; Evidence={ECO:0000250};
CC Note=Binds 1 Ca(2+) ion. {ECO:0000250};
CC -!- SUBCELLULAR LOCATION: Secreted.
CC -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC -!- SIMILARITY: Belongs to the phospholipase A2 family. Group II subfamily.
CC D49 sub-subfamily. {ECO:0000305}.
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DR PIR; A59420; A59420.
DR AlphaFoldDB; Q7LZQ4; -.
DR SMR; Q7LZQ4; -.
DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR GO; GO:0005509; F:calcium ion binding; IEA:InterPro.
DR GO; GO:0004623; F:phospholipase A2 activity; IEA:UniProtKB-EC.
DR GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR GO; GO:0050482; P:arachidonic acid secretion; IEA:InterPro.
DR GO; GO:0016042; P:lipid catabolic process; IEA:UniProtKB-KW.
DR GO; GO:0006644; P:phospholipid metabolic process; IEA:InterPro.
DR CDD; cd00125; PLA2c; 1.
DR Gene3D; 1.20.90.10; -; 1.
DR InterPro; IPR001211; PLipase_A2.
DR InterPro; IPR033112; PLipase_A2_Asp_AS.
DR InterPro; IPR016090; PLipase_A2_dom.
DR InterPro; IPR036444; PLipase_A2_dom_sf.
DR InterPro; IPR033113; PLipase_A2_His_AS.
DR PANTHER; PTHR11716; PTHR11716; 1.
DR Pfam; PF00068; Phospholip_A2_1; 1.
DR PRINTS; PR00389; PHPHLIPASEA2.
DR SMART; SM00085; PA2c; 1.
DR SUPFAM; SSF48619; SSF48619; 1.
DR PROSITE; PS00119; PA2_ASP; 1.
DR PROSITE; PS00118; PA2_HIS; 1.
PE 1: Evidence at protein level;
KW Calcium; Direct protein sequencing; Disulfide bond;
KW Hemostasis impairing toxin; Hydrolase; Lipid degradation; Lipid metabolism;
KW Metal-binding; Platelet aggregation inhibiting toxin; Secreted; Toxin.
FT CHAIN 1..124
FT /note="Acidic phospholipase A2"
FT /id="PRO_0000161594"
FT ACT_SITE 47
FT /evidence="ECO:0000250|UniProtKB:P06859"
FT ACT_SITE 89
FT /evidence="ECO:0000250|UniProtKB:P06859"
FT BINDING 27
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT BINDING 29
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT BINDING 31
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT BINDING 48
FT /ligand="Ca(2+)"
FT /ligand_id="ChEBI:CHEBI:29108"
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT DISULFID 26..116
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT DISULFID 28..44
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT DISULFID 43..95
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT DISULFID 49..124
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT DISULFID 50..88
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT DISULFID 57..81
FT /evidence="ECO:0000250|UniProtKB:O42191"
FT DISULFID 75..86
FT /evidence="ECO:0000250|UniProtKB:O42191"
SQ SEQUENCE 124 AA; 13975 MW; 4D04769D31A44E5A CRC64;
SLIQFETLIM KVAKKSGMFW YSNYGCYCGW GGQGRPQDAT DRCCFVHDCC YGKVTGCDPK
MDVYSFSEEN GDIVCGGDDP CKKEICECDR AAAICFRDNL NTYNDKKYWA FGAKNCPQEE
SEPC
