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UniProtKB - P0DPT3 (SCXIT_ANDMA)
Protein
Beta-toxin Am IT
Gene
N/A
Organism
Androctonus mauritanicus mauritanicus (Scorpion)
Status
Functioni
Has a toxic effect on insects and mammals. On German cockroach larvae, it provokes contraction, paralysis and lethality (PubMed:26109302).
Intracerebroventricular injection into mice causes severe neurotoxic symptoms (PubMed:26109302).
It fully competes with the binding of the iodinated Css4 (AC P60266) on rat brain synaptosomes, with moderate affinity and in a concentration-dependent manner (EC(50)=25 nM). It may act on both site 3 and site 4 of voltage-gated sodium channels.
1 PublicationMiscellaneous
This toxin does not inhibit the binding of iodinated Css2 (AC P08900) and iodinated Ts1 (AC P15226) to their specific antibodies.1 Publication
GO - 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: Beta-toxin Am IT1 PublicationShort name: Am IT1 Publication |
Organismi | Androctonus mauritanicus mauritanicus (Scorpion) |
Taxonomic identifieri | 6860 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Chelicerata › Arachnida › Scorpiones › Buthida › Buthoidea › Buthidae › Androctonus › |
Subcellular locationi
Extracellular region or secreted
- Secreted 1 Publication
Extracellular region or secreted
- extracellular region Source: UniProtKB-SubCell
Keywords - Cellular componenti
SecretedPathology & Biotechi
Toxic dosei
LD50 is 80 ng/100 mg of body weight cockroach larvae (B.germanica).1 Publication
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000446449 | 1 – 65 | Beta-toxin Am IT1 PublicationAdd BLAST | 65 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Modified residuei | 1 | Pyrrolidone carboxylic acid (Glu); partial1 Publication | 1 | |
Disulfide bondi | 12 ↔ 63 | PROSITE-ProRule annotation | ||
Disulfide bondi | 16 ↔ 38 | PROSITE-ProRule annotation | ||
Disulfide bondi | 23 ↔ 45 | PROSITE-ProRule annotation | ||
Disulfide bondi | 27 ↔ 47 | PROSITE-ProRule annotation | ||
Modified residuei | 65 | Serine amide1 Publication | 1 |
Keywords - PTMi
Amidation, Disulfide bond, Pyrrolidone carboxylic acidExpressioni
Tissue specificityi
Expressed by the venom gland.1 Publication
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 1 – 64 | LCN-type CS-alpha/betaPROSITE-ProRule annotationAdd BLAST | 64 |
Domaini
Has the structural arrangement of an alpha-helix connected to antiparallel beta-sheets by disulfide bonds (CS-alpha/beta).Curated
Sequence similaritiesi
Family and domain databases
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.
P0DPT3-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
EHGYLLDKYT GCKVWCVINN ESCNGECNKR RGGYYGYCYF WKLACYCQGA
60
RKSELWNYKT NKCKS
Mass spectrometryi
Molecular mass is 7831.8 Da. Determined by MALDI. 1 Publication
Molecular mass is 7803.8 Da. Determined by MALDI. with pyrrolidone carboxylic acid (Glu).1 Publication
Similar proteinsi
Cross-referencesi
3D structure databases
AlphaFoldDBi | P0DPT3 |
SMRi | P0DPT3 |
ModBasei | Search... |
Family and domain databases
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 | SCXIT_ANDMA | |
Accessioni | P0DPT3Primary (citable) accession number: P0DPT3 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | April 10, 2019 |
Last sequence update: | April 10, 2019 | |
Last modified: | May 25, 2022 | |
This is version 8 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