UniProtKB - P00609 (PA2B5_NOTSC)
Protein
Basic phospholipase A2 notechis II-5
Gene
N/A
Organism
Notechis scutatus scutatus (Mainland tiger snake) (Common tiger snake)
Status
Functioni
Snake venom phospholipase A2 (PLA2) that inhibits neuromuscular transmission by blocking acetylcholine release from the nerve termini. Notechis II-5 is less toxic than notexin but has a higher specific phospholipase activity. PLA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides.
Catalytic activityi
- a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1-acyl-sn-glycero-3-phosphocholine + a fatty acid + H+PROSITE-ProRule annotationEC:3.1.1.4PROSITE-ProRule annotation
Cofactori
Ca2+By similarityNote: Binds 1 Ca2+ ion.By similarity
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Metal bindingi | 28 | Calcium; via carbonyl oxygenBy similarity | 1 | |
Metal bindingi | 30 | Calcium; via carbonyl oxygenBy similarity | 1 | |
Metal bindingi | 32 | Calcium; via carbonyl oxygenBy similarity | 1 | |
Active sitei | 48 | By similarity | 1 | |
Metal bindingi | 49 | CalciumBy similarity | 1 | |
Active sitei | 93 | By similarity | 1 |
GO - Molecular functioni
- calcium ion binding Source: InterPro
- phospholipase A2 activity Source: UniProtKB-EC
- phospholipase A2 activity (consuming 1,2-dipalmitoylphosphatidylcholine) Source: UniProtKB-EC
- phospholipase A2 activity consuming 1,2-dioleoylphosphatidylethanolamine) Source: UniProtKB-EC
- toxin activity Source: UniProtKB-KW
GO - Biological processi
- arachidonic acid secretion Source: InterPro
- lipid catabolic process Source: UniProtKB-KW
- phospholipid metabolic process Source: InterPro
Keywordsi
Molecular function | Hydrolase, Neurotoxin, Presynaptic neurotoxin, Toxin |
Biological process | Lipid degradation, Lipid metabolism |
Ligand | Calcium, Metal-binding |
Names & Taxonomyi
Protein namesi | Recommended name: Basic phospholipase A2 notechis II-5 (EC:3.1.1.4)Short name: svPLA2 Alternative name(s): Phosphatidylcholine 2-acylhydrolase |
Organismi | Notechis scutatus scutatus (Mainland tiger snake) (Common tiger snake) |
Taxonomic identifieri | 70142 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Lepidosauria › Squamata › Bifurcata › Unidentata › Episquamata › Toxicofera › Serpentes › Colubroidea › Elapidae › Acanthophiinae › Notechis › |
Subcellular locationi
Extracellular region or secreted
Extracellular region or secreted
- extracellular region Source: UniProtKB-SubCell
Keywords - Cellular componenti
SecretedPathology & Biotechi
Toxic dosei
LD50 is 0.045 mg/kg by intravenous injection.
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000161676 | 1 – 119 | Basic phospholipase A2 notechis II-5Add BLAST | 119 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 11 ↔ 71 | Combined sources1 Publication | ||
Disulfide bondi | 27 ↔ 118 | Combined sources1 Publication | ||
Disulfide bondi | 29 ↔ 45 | Combined sources1 Publication | ||
Disulfide bondi | 44 ↔ 99 | Combined sources1 Publication | ||
Disulfide bondi | 51 ↔ 92 | Combined sources1 Publication | ||
Disulfide bondi | 60 ↔ 85 | Combined sources1 Publication | ||
Disulfide bondi | 78 ↔ 90 | Combined sources1 Publication |
Keywords - PTMi
Disulfide bondExpressioni
Tissue specificityi
Expressed by the venom gland.
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details3D structure databases
SMRi | P00609 |
ModBasei | Search... |
PDBe-KBi | Search... |
Miscellaneous databases
EvolutionaryTracei | P00609 |
Family & Domainsi
Sequence similaritiesi
Family and domain databases
CDDi | cd00125, PLA2c, 1 hit |
Gene3Di | 1.20.90.10, 1 hit |
InterProi | View protein in InterPro IPR001211, PLipase_A2 IPR033112, PLipase_A2_Asp_AS IPR016090, PLipase_A2_dom IPR036444, PLipase_A2_dom_sf IPR033113, PLipase_A2_His_AS |
PANTHERi | PTHR11716, PTHR11716, 1 hit |
Pfami | View protein in Pfam PF00068, Phospholip_A2_1, 1 hit |
PRINTSi | PR00389, PHPHLIPASEA2 |
SMARTi | View protein in SMART SM00085, PA2c, 1 hit |
SUPFAMi | SSF48619, SSF48619, 1 hit |
PROSITEi | View protein in PROSITE PS00119, PA2_ASP, 1 hit PS00118, PA2_HIS, 1 hit |
i Sequence
Sequence statusi: Complete.
P00609-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
NLVQFSYLIQ CANHGRRPTR HYMDYGCYCG WGGSGTPVDE LDRCCKIHDD
60 70 80 90 100
CYSDAEKKGC SPKMSAYDYY CGENGPYCRN IKKKCLRFVC DCDVEAAFCF
110
AKAPYNNANW NIDTKKRCQ
Sequence databases
PIRi | A00750, PSNOA5 |
Similar proteinsi
Cross-referencesi
Sequence databases
PIRi | A00750, PSNOA5 |
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
2NOT | X-ray | 3.00 | A/B | 1-119 | [»] | |
SMRi | P00609 | |||||
ModBasei | Search... | |||||
PDBe-KBi | Search... |
Miscellaneous databases
EvolutionaryTracei | P00609 |
Family and domain databases
CDDi | cd00125, PLA2c, 1 hit |
Gene3Di | 1.20.90.10, 1 hit |
InterProi | View protein in InterPro IPR001211, PLipase_A2 IPR033112, PLipase_A2_Asp_AS IPR016090, PLipase_A2_dom IPR036444, PLipase_A2_dom_sf IPR033113, PLipase_A2_His_AS |
PANTHERi | PTHR11716, PTHR11716, 1 hit |
Pfami | View protein in Pfam PF00068, Phospholip_A2_1, 1 hit |
PRINTSi | PR00389, PHPHLIPASEA2 |
SMARTi | View protein in SMART SM00085, PA2c, 1 hit |
SUPFAMi | SSF48619, SSF48619, 1 hit |
PROSITEi | View protein in PROSITE PS00119, PA2_ASP, 1 hit PS00118, PA2_HIS, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | PA2B5_NOTSC | |
Accessioni | P00609Primary (citable) accession number: P00609 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | July 21, 1986 |
Last sequence update: | July 21, 1986 | |
Last modified: | February 26, 2020 | |
This is version 114 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Animal Toxin Annotation Program | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
3D-structure, Direct protein sequencingDocuments
- PDB cross-references
Index of Protein Data Bank (PDB) cross-references - SIMILARITY comments
Index of protein domains and families