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UniProtKB - P82812 (SIX2_HOTTS)
Protein
Insect toxin BsIT2
Gene
N/A
Organism
Hottentotta tamulus sindicus (Scorpion) (Buthus sindicus)
Status
Functioni
Depressant insect beta-toxins cause a transient contraction paralysis followed by a slow flaccid paralysis. They bind voltage-independently at site-4 of sodium channels (Nav) and shift the voltage of activation toward more negative potentials thereby affecting sodium channel activation and promoting spontaneous and repetitive firing. This toxin is active only on insects.
1 PublicationGO - Molecular functioni
- sodium channel inhibitor activity Source: InterPro
- toxin activity Source: UniProtKB-KW
GO - Biological processi
- defense response Source: InterPro
- modulation by symbiont of host nervous system process Source: InterPro
Keywordsi
Molecular function | Ion channel impairing toxin, Neurotoxin, Toxin, Voltage-gated sodium channel impairing toxin |
Names & Taxonomyi
Protein namesi | Recommended name: Insect toxin BsIT2Short name: Insect toxin 2 Alternative name(s): Bs-dprIT2 |
Organismi | Hottentotta tamulus sindicus (Scorpion) (Buthus sindicus) |
Taxonomic identifieri | 42519 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Chelicerata › Arachnida › Scorpiones › Buthida › Buthoidea › Buthidae › Mesobuthus › |
Subcellular locationi
Extracellular region or secreted
Extracellular region or secreted
- extracellular region Source: UniProtKB-SubCell
Keywords - Cellular componenti
SecretedPathology & Biotechi
Toxic dosei
LD50 is 160 ng/100 mg of body weight of cockroach (B.germanica) and 81 ng/100 mg of body weight of blowfly larvae (S.falculata).1 Publication
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000066719 | 1 – 61 | Insect toxin BsIT2Add BLAST | 61 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 10 ↔ 60 | PROSITE-ProRule annotation | ||
Disulfide bondi | 14 ↔ 35 | PROSITE-ProRule annotation | ||
Disulfide bondi | 21 ↔ 42 | PROSITE-ProRule annotation | ||
Disulfide bondi | 25 ↔ 44 | PROSITE-ProRule annotation |
Keywords - PTMi
Disulfide bondExpressioni
Tissue specificityi
Expressed by the venom gland.
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 1 – 61 | LCN-type CS-alpha/betaPROSITE-ProRule annotationAdd BLAST | 61 |
Domaini
Has the structural arrangement of an alpha-helix connected to antiparallel beta-sheets by disulfide bonds (CS-alpha/beta).Curated
Sequence similaritiesi
Belongs to the long (4 C-C) scorpion toxin superfamily. Sodium channel inhibitor family. Beta subfamily.Curated
Family and domain databases
CDDi | cd00107, Knot1, 1 hit |
Gene3Di | 3.30.30.10, 1 hit |
InterProi | View protein in InterPro IPR044062, LCN-type_CS_alpha_beta_dom IPR003614, Scorpion_toxin-like IPR036574, Scorpion_toxin-like_sf IPR018218, Scorpion_toxinL IPR002061, Scorpion_toxinL/defensin |
Pfami | View protein in Pfam PF00537, Toxin_3, 1 hit |
PRINTSi | PR00285, SCORPNTOXIN |
SMARTi | View protein in SMART SM00505, Knot1, 1 hit |
SUPFAMi | SSF57095, SSF57095, 1 hit |
PROSITEi | View protein in PROSITE PS51863, LCN_CSAB, 1 hit |
i Sequence
Sequence statusi: Complete.
P82812-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
DGYIKKSKGC KVSCVINNVY CNSMCKSLGG SYGYCWTYGL ACWCEGLPNA
60
KRWKYETKTC K
Mass spectrometryi
Molecular mass is 6892.4 Da. Determined by ESI. 1 Publication
Sequence databases
PIRi | B59352 |
Similar proteinsi
Cross-referencesi
Sequence databases
PIRi | B59352 |
3D structure databases
AlphaFoldDBi | P82812 |
SMRi | P82812 |
ModBasei | Search... |
Family and domain databases
CDDi | cd00107, Knot1, 1 hit |
Gene3Di | 3.30.30.10, 1 hit |
InterProi | View protein in InterPro IPR044062, LCN-type_CS_alpha_beta_dom IPR003614, Scorpion_toxin-like IPR036574, Scorpion_toxin-like_sf IPR018218, Scorpion_toxinL IPR002061, Scorpion_toxinL/defensin |
Pfami | View protein in Pfam PF00537, Toxin_3, 1 hit |
PRINTSi | PR00285, SCORPNTOXIN |
SMARTi | View protein in SMART SM00505, Knot1, 1 hit |
SUPFAMi | SSF57095, SSF57095, 1 hit |
PROSITEi | View protein in PROSITE PS51863, LCN_CSAB, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | SIX2_HOTTS | |
Accessioni | P82812Primary (citable) accession number: P82812 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | September 26, 2001 |
Last sequence update: | September 26, 2001 | |
Last modified: | May 25, 2022 | |
This is version 71 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
Direct protein sequencingDocuments
- SIMILARITY comments
Index of protein domains and families