UniProtKB - P83257 (T3D1B_PIRLC)
Protein
Delta-amaurobitoxin-Pl1b
Gene
N/A
Organism
Pireneitega luctuosa (Tangled nest spider) (Paracoelotes luctuosus)
Status
Functioni
Insecticidal toxin. Lethal to lepidopteran larvae. No adverse affects when intracerebroventricularly injected in mice at a dose of 0.2 µg but causes reversible paralysis of legs when injected intracerebroventricularly in mice at a dose of 2.0 µg. Binds to site 4 of insect voltage-gated sodium channel (Nav) and inhibits channel inactivation.2 Publications
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sitei | 8 | Pharmacophore | 1 | |
Sitei | 12 | Pharmacophore | 1 | |
Sitei | 19 | May be involved in voltage sensor trapping upon activation of sodium channel1 Publication | 1 | |
Sitei | 22 | Pharmacophore | 1 | |
Sitei | 24 | Pharmacophore | 1 | |
Sitei | 26 | Pharmacophore | 1 | |
Sitei | 28 | Pharmacophore | 1 | |
Sitei | 30 | Pharmacophore | 1 | |
Sitei | 32 | Pharmacophore | 1 | |
Sitei | 34 | Pharmacophore | 1 |
GO - Molecular functioni
- sodium channel inhibitor activity Source: UniProtKB
- toxin activity Source: UniProtKB-KW
GO - Biological processi
- pathogenesis Source: UniProtKB
Keywordsi
Molecular function | Ion channel impairing toxin, Neurotoxin, Toxin, Voltage-gated sodium channel impairing toxin |
Names & Taxonomyi
Protein namesi | Recommended name: Delta-amaurobitoxin-Pl1bShort name: Delta-AMATX-Pl1b Alternative name(s): Delta-palutoxin IT21 Publication Short name: Delta-paluIT21 Publication |
Organismi | Pireneitega luctuosa (Tangled nest spider) (Paracoelotes luctuosus) |
Taxonomic identifieri | 185217 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Chelicerata › Arachnida › Araneae › Araneomorphae › Entelegynae › Amaurobiidae › Pireneitega |
Organism-specific databases
ArachnoServeri | AS000302, delta-Amaurobitoxin-Pl1b |
Subcellular locationi
Extracellular region or secreted
Extracellular region or secreted
- extracellular region Source: UniProtKB-SubCell
Keywords - Cellular componenti
SecretedPathology & Biotechi
Toxic dosei
LD50 is 24.2 ng/mg body weight of lepidoptera larvae.1 Publication
Mutagenesis
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Mutagenesisi | 3 | V → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 5 | D → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 7 | Q → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 8 | R → A: 51-fold decrease in binding affinity and nonsignificant differences in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 8 | R → D: More than 80-fold decrease in binding affinity and 5-fold decrease in toxicity. 1 Publication | 1 | |
Mutagenesisi | 11 | S → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 12 | W → A: More than 160-fold decrease in binding affinity and nonsignificant differences in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 12 | W → F: 13.5-fold decrease in binding affinity and more than 8-fold decrease in toxicity. 1 Publication | 1 | |
Mutagenesisi | 13 | S → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 16 | Y → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 19 | D → A: Nonsignificant differences in binding affinity and 2.9-fold decrease in toxicity. 1 Publication | 1 | |
Mutagenesisi | 21 | Y → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 22 | Y → A: 54-fold decrease in binding affinity and nonsignificant differences in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 24 | S → A: 40-fold decrease in binding affinity and nonsignificant differences in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 26 | R → A: 16-fold decrease in binding affinity and nonsignificant differences in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 28 | M → A: 28-fold decrease in binding affinity and nonsignificant differences in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 30 | Y → A: 58-fold decrease in binding affinity and 5.1-fold decrease in toxicity. 1 Publication | 1 | |
Mutagenesisi | 30 | Y → F: 16-fold decrease in binding affinity and nonsignificant differences in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 32 | R → A: 24-fold decrease in binding affinity and 2.3-fold decrease in toxicity. 1 Publication | 1 | |
Mutagenesisi | 34 | R → A: 18-fold decrease in binding affinity and nonsignificant differences in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 35 | N → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 36 | N → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 | |
Mutagenesisi | 37 | S → A: Nonsignificant differences nor in binding affinity neither in lethal dose. 1 Publication | 1 |
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
PeptideiPRO_0000044962 | 1 – 37 | Delta-amaurobitoxin-Pl1bAdd BLAST | 37 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 2 ↔ 18 | 1 Publication | ||
Disulfide bondi | 9 ↔ 23 | 1 Publication | ||
Disulfide bondi | 17 ↔ 33 | 1 Publication | ||
Disulfide bondi | 25 ↔ 31 | 1 Publication | ||
Modified residuei | 37 | Serine amide1 Publication | 1 |
Keywords - PTMi
Amidation, Disulfide bondExpressioni
Tissue specificityi
Expressed by the venom gland.1 Publication
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details3D structure databases
SMRi | P83257 |
ModBasei | Search... |
PDBe-KBi | Search... |
Miscellaneous databases
EvolutionaryTracei | P83257 |
Family & Domainsi
Domaini
The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin.
Sequence similaritiesi
Keywords - Domaini
KnottinFamily and domain databases
InterProi | View protein in InterPro IPR016328, Beta/delta-agatoxin_fam |
PIRSFi | PIRSF001882, Curtatoxin, 1 hit |
PROSITEi | View protein in PROSITE PS60015, MU_AGATOXIN, 1 hit |
i Sequence
Sequence statusi: Complete.
Mass spectrometryi
Molecular mass is 4114.6 Da. Determined by MALDI. 1 Publication
Similar proteinsi
Cross-referencesi
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
1V91 | NMR | - | A | 1-37 | [»] | |
SMRi | P83257 | |||||
ModBasei | Search... | |||||
PDBe-KBi | Search... |
Organism-specific databases
ArachnoServeri | AS000302, delta-Amaurobitoxin-Pl1b |
Miscellaneous databases
EvolutionaryTracei | P83257 |
Family and domain databases
InterProi | View protein in InterPro IPR016328, Beta/delta-agatoxin_fam |
PIRSFi | PIRSF001882, Curtatoxin, 1 hit |
PROSITEi | View protein in PROSITE PS60015, MU_AGATOXIN, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | T3D1B_PIRLC | |
Accessioni | P83257Primary (citable) accession number: P83257 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | November 28, 2002 |
Last sequence update: | March 1, 2002 | |
Last modified: | December 11, 2019 | |
This is version 74 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Animal Toxin 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