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UniProtKB - P0DUH9 (SCX7_CENTE)
Protein
Beta-toxin Ct7
Gene
N/A
Organism
Centruroides tecomanus (Scorpion) (Centruroides limpidus tecomanus)
Status
Functioni
Beta toxins 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 (By similarity).
Is possibly toxic to mice, freshwater shrimp and crickets (PubMed:27130039).
By similarity1 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: Beta-toxin Ct71 Publication |
Organismi | Centruroides tecomanus (Scorpion) (Centruroides limpidus tecomanus) |
Taxonomic identifieri | 1028682 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Chelicerata › Arachnida › Scorpiones › Buthida › Buthoidea › Buthidae › Centruroides |
Subcellular locationi
Extracellular region or secreted
- Secreted 1 Publication
Extracellular region or secreted
- extracellular region Source: UniProtKB
Keywords - Cellular componenti
SecretedPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Signal peptidei | 1 – 18 | 1 PublicationAdd BLAST | 18 | |
ChainiPRO_0000452425 | 19 – 81 | Beta-toxin Ct71 PublicationAdd BLAST | 63 | |
PropeptideiPRO_0000452426 | 82 | By similarity | 1 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 29 ↔ 80 | PROSITE-ProRule annotation | ||
Disulfide bondi | 33 ↔ 54 | PROSITE-ProRule annotation | ||
Disulfide bondi | 40 ↔ 61 | PROSITE-ProRule annotation | ||
Disulfide bondi | 44 ↔ 63 | PROSITE-ProRule annotation | ||
Modified residuei | 81 | Glycine amide1 Publication | 1 |
Keywords - PTMi
Amidation, Disulfide bondExpressioni
Tissue specificityi
Expressed by the venom gland.1 Publication
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 19 – 81 | 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. Beta subfamily.Curated
Keywords - Domaini
SignalFamily 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.
: The displayed sequence is further processed into a mature form. Sequence processingi
P0DUH9-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MKVLILIIAS VLLIGVECKD GYPMNSEGCK ISCVIGNTFC DTECKMLKAS
60 70 80
SGYCWTLGLA CYCEGLPENV EVWDSATNKC GGK
Mass spectrometryi
Molecular mass is 6817 Da. Determined by ESI. Average mass.1 Publication
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | JZ122271 mRNA No translation available. |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | JZ122271 mRNA No translation available. |
3D structure databases
AlphaFoldDBi | P0DUH9 |
SMRi | P0DUH9 |
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 | SCX7_CENTE | |
Accessioni | P0DUH9Primary (citable) accession number: P0DUH9 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | April 7, 2021 |
Last sequence update: | April 7, 2021 | |
Last modified: | May 25, 2022 | |
This is version 5 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