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UniProtKB - C0HL58 (NDB4B_ISOMC)
Protein
Peptide Im-5
Gene
N/A
Organism
Isometrus maculatus (Lesser brown scorpion) (Scorpio maculatus)
Status
Functioni
Probably forms pores in target membranes. Has antibacterial activity against Gram-negative bacterium E.coli NBRC 3972 (MIC=10 µM) and against Gram-positive bacteria S.aureus NBRC 13276 (MIC=2.5-5 µM) and B.subtilis NBRC 3009 (MIC=0.5-1 µM). Toxic to cricket A.domestica. Has hemolytic activity against sheep erythrocytes.
1 PublicationMiscellaneous
Fragments comprising residues 10-25, 1-19, 7-25, 1-22, 4-25 and 1-23 have been detected in venom but it is unclear whether they have a physiological role or are simply due to degradation.1 Publication
GO - Molecular functioni
- toxin activity Source: UniProtKB
GO - Biological processi
- cytolysis in another organism Source: UniProtKB
- defense response to Gram-negative bacterium Source: UniProtKB
- defense response to Gram-positive bacterium Source: UniProtKB
- hemolysis in another organism Source: UniProtKB-KW
- killing of cells of another organism Source: UniProtKB
Keywordsi
Molecular function | Antibiotic, Antimicrobial |
Biological process | Cytolysis, Hemolysis |
Names & Taxonomyi
Protein namesi | Recommended name: Peptide Im-51 Publication |
Organismi | Isometrus maculatus (Lesser brown scorpion) (Scorpio maculatus) |
Taxonomic identifieri | 497827 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Ecdysozoa › Arthropoda › Chelicerata › Arachnida › Scorpiones › Buthida › Buthoidea › Buthidae › Isometrus |
Subcellular locationi
Extracellular region or secreted
- Secreted 1 Publication
Other locations
- Target cell membrane 1 Publication
Note: Probably forms a helical membrane channel in the prey.1 Publication
Extracellular region or secreted
- extracellular region Source: UniProtKB
Other locations
- membrane Source: UniProtKB-KW
Keywords - Cellular componenti
Membrane, Secreted, Target cell membrane, Target membranePathology & Biotechi
Toxic dosei
LD50 is 61 nmol/g by intraabdominal injection into cricket A.domestica.1 Publication
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
PeptideiPRO_0000442986 | 1 – 25 | Peptide Im-51 PublicationAdd BLAST | 25 |
Expressioni
Tissue specificityi
Expressed by the venom gland.1 Publication
Structurei
3D structure databases
AlphaFoldDBi | C0HL58 |
ModBasei | Search... |
SWISS-MODEL-Workspacei | Submit a new modelling project... |
Family & Domainsi
Sequence similaritiesi
Belongs to the non-disulfide-bridged peptide (NDBP) superfamily. Medium-length antimicrobial peptide (group 3) family.Curated
Family and domain databases
InterProi | View protein in InterPro IPR012523, Antimicrobial_4 |
Pfami | View protein in Pfam PF08024, Antimicrobial_4, 1 hit |
i Sequence
Sequence statusi: Complete.
Mass spectrometryi
Molecular mass is 2803.7 Da. Determined by MALDI. 1 Publication
Similar proteinsi
Cross-referencesi
3D structure databases
AlphaFoldDBi | C0HL58 |
ModBasei | Search... |
SWISS-MODEL-Workspacei | Submit a new modelling project... |
Family and domain databases
InterProi | View protein in InterPro IPR012523, Antimicrobial_4 |
Pfami | View protein in Pfam PF08024, Antimicrobial_4, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | NDB4B_ISOMC | |
Accessioni | C0HL58Primary (citable) accession number: C0HL58 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | January 31, 2018 |
Last sequence update: | January 31, 2018 | |
Last modified: | May 25, 2022 | |
This is version 13 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) |
Miscellaneousi
Keywords - Technical termi
Direct protein sequencingDocuments
- SIMILARITY comments
Index of protein domains and families