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UniProtKB - A0A0B5A7N1 (INS2B_CONFO)
Protein
Con-Ins F2b
Gene
N/A
Organism
Conus floridulus (Cone snail) (Lividoconus floridulus)
Status
Functioni
This venom insulin facilitates prey capture by rapidly inducing hypoglycemic shock. Intraperitoneal injection of this peptide into zebrafish lowers blood glucose with the same potency than human insulin. In vivo, when applied to water, this peptide reduces overall locomotor activity of zebrafish larvae, observed as a significant decrease in the percentage of time spent swimming and movement frequency.
By similarityGO - Molecular functioni
- hormone activity Source: UniProtKB-KW
- toxin activity Source: UniProtKB-KW
GO - Biological processi
- glucose metabolic process Source: UniProtKB-KW
Keywordsi
Molecular function | Hormone, Toxin |
Biological process | Carbohydrate metabolism, Glucose metabolism |
Names & Taxonomyi
Protein namesi | Recommended name: Con-Ins F2b1 PublicationAlternative name(s): Insulin 2bImported Cleaved into the following 2 chains: Con-Ins F2b B chain1 Publication Con-Ins F2b A chain1 Publication |
Organismi | Conus floridulus (Cone snail) (Lividoconus floridulus) |
Taxonomic identifieri | 97180 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Spiralia › Lophotrochozoa › Mollusca › Gastropoda › Caenogastropoda › Neogastropoda › Conoidea › Conidae › Conus › Lividoconus |
Subcellular locationi
Extracellular region or secreted
- Secreted By similarity
Extracellular region or secreted
- extracellular region Source: UniProtKB-SubCell
Keywords - Cellular componenti
SecretedPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Signal peptidei | 1 – 24 | Sequence analysisAdd BLAST | 24 | |
PeptideiPRO_5002111993 | 25 – 58 | Con-Ins F2b B chainBy similarityAdd BLAST | 34 | |
PropeptideiPRO_0000439336 | 59 – 89 | C peptideBy similarityAdd BLAST | 31 | |
PeptideiPRO_0000439337 | 90 – 127 | Con-Ins F2b A chainBy similarityAdd BLAST | 38 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 29 ↔ 104 | Curated | ||
Disulfide bondi | 41 ↔ 107 | Interchain (between B and A chains)By similarity | ||
Disulfide bondi | 53 ↔ 120 | Interchain (between B and A chains)By similarity | ||
Disulfide bondi | 106 ↔ 111 | By similarity | ||
Modified residuei | 115 | 4-carboxyglutamate; partialBy similarity | 1 | |
Modified residuei | 127 | Serine amide1 Publication | 1 |
Keywords - PTMi
Amidation, Cleavage on pair of basic residues, Disulfide bond, Gamma-carboxyglutamic acidExpressioni
Tissue specificityi
Expressed by the venom gland.1 Publication
Interactioni
Subunit structurei
Heterodimer of A and B chains; disulfide-linked.
By similarityGO - Molecular functioni
- hormone activity Source: UniProtKB-KW
Family & Domainsi
Sequence similaritiesi
Belongs to the insulin family.
Keywords - Domaini
SignalFamily and domain databases
InterProi | View protein in InterPro IPR016179, Insulin-like IPR036438, Insulin-like_sf IPR016724, Insulin-rel_pep IPR022353, Insulin_CS IPR022352, Insulin_family |
Pfami | View protein in Pfam PF00049, Insulin, 1 hit |
PIRSFi | PIRSF018431, Molluscan_insulin_rel_peptide, 1 hit |
PRINTSi | PR00276, INSULINFAMLY |
SMARTi | View protein in SMART SM00078, IlGF, 1 hit |
SUPFAMi | SSF56994, SSF56994, 1 hit |
PROSITEi | View protein in PROSITE PS00262, INSULIN, 1 hit |
i Sequence
Sequence statusi: Complete.
: The displayed sequence is further processed into a mature form. Sequence processingi
A0A0B5A7N1-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MTTSSYFLLV ALGLLLYVCR SSFGSEHTCE SDASPHPQGV CGSPLAEAVE
60 70 80 90 100
AACELEESLQ GGTGKKRGRA SLLRKRRAFL SMLKARAKRN EASPLQRSGR
110 120
GIVCECCKNH CNLEELTEYC PPVTEGSG
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | KP268615 mRNA Translation: AJD85824.1 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | KP268615 mRNA Translation: AJD85824.1 |
3D structure databases
AlphaFoldDBi | A0A0B5A7N1 |
SMRi | A0A0B5A7N1 |
ModBasei | Search... |
Family and domain databases
InterProi | View protein in InterPro IPR016179, Insulin-like IPR036438, Insulin-like_sf IPR016724, Insulin-rel_pep IPR022353, Insulin_CS IPR022352, Insulin_family |
Pfami | View protein in Pfam PF00049, Insulin, 1 hit |
PIRSFi | PIRSF018431, Molluscan_insulin_rel_peptide, 1 hit |
PRINTSi | PR00276, INSULINFAMLY |
SMARTi | View protein in SMART SM00078, IlGF, 1 hit |
SUPFAMi | SSF56994, SSF56994, 1 hit |
PROSITEi | View protein in PROSITE PS00262, INSULIN, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | INS2B_CONFO | |
Accessioni | A0A0B5A7N1Primary (citable) accession number: A0A0B5A7N1 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | March 15, 2017 |
Last sequence update: | April 1, 2015 | |
Last modified: | May 25, 2022 | |
This is version 26 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Animal Toxin Annotation Program |