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UniProtKB - P59354 (SCX4_BUTOM)
Protein
Alpha-like toxin Bom4
Gene
N/A
Organism
Buthus occitanus mardochei (Moroccan scorpion) (Buthus mardochei)
Status
Functioni
Alpha toxins bind voltage-independently at site-3 of sodium channels (Nav) and inhibit the inactivation of the activated channels, thereby blocking neuronal transmission. This alpha-like toxin is highly toxic to mice and 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: Alpha-like toxin Bom4CuratedAlternative name(s): Bom IV1 Publication Short name: BomIVCurated |
Organismi | Buthus occitanus mardochei (Moroccan scorpion) (Buthus mardochei) |
Taxonomic identifieri | 6869 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Chelicerata › Arachnida › Scorpiones › Buthida › Buthoidea › Buthidae › Buthus › |
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 1.15 µg/kg (23 ng/mouse) by intracerebroventricular injection into mice.1 Publication
LD50 is 19.7 nmol/g to cockroaches (Blattella germanica).1 Publication
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000066745 | 1 – 65 | Alpha-like toxin Bom41 PublicationAdd BLAST | 65 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 12 ↔ 63 | PROSITE-ProRule annotation | ||
Disulfide bondi | 16 ↔ 36 | PROSITE-ProRule annotation | ||
Disulfide bondi | 22 ↔ 46 | PROSITE-ProRule annotation | ||
Disulfide bondi | 26 ↔ 48 | PROSITE-ProRule annotation |
Keywords - PTMi
Disulfide bondExpressioni
Tissue specificityi
Expressed by the venom gland.Curated
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 2 – 64 | LCN-type CS-alpha/betaPROSITE-ProRule annotationAdd BLAST | 63 |
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. Alpha 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.
P59354-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
GRDAYIAQPE NCVYECAKNS YCNDLCTKNG AKSGYCQWLG KYGNACWCED
60
LPDNVPIRIP GKCHF
Mass spectrometryi
Molecular mass is 7287.96±0.37 Da. Determined by ESI. 1 Publication
Similar proteinsi
Cross-referencesi
3D structure databases
AlphaFoldDBi | P59354 |
SMRi | P59354 |
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 | SCX4_BUTOM | |
Accessioni | P59354Primary (citable) accession number: P59354 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | February 28, 2003 |
Last sequence update: | February 28, 2003 | |
Last modified: | May 25, 2022 | |
This is version 69 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