Peptide Database

Peptide NamePotassium channel toxin kappa-KTx 3.1

Function Ontology

Venom / Toxin ▸ General toxin ▸ Toxin

Standard StatusStandard

Sequence Length27 amino acids

Chemical FormulaC140H219N37O38S5

DescriptionStandard

        QWINACFNVCMKISSDKKYCKYLCGKN
    

Molecular Weight3188.79 Da

Isoelectric Point (pI)9.10

Net Charge (pH 7.0)3.71

Net Charge (pH 7.4) 3.44

Charge Density (pH 7.0) 0.1376

GRAVY Index-0.33

Hydrophobic Moment 0.45

Boman Index-0.06

Instability Index35.68

Aliphatic Index 57.78

Aromaticity 0.1481

Extinction Coeff. Reduced 8480.00

Extinction Coeff. Oxidized 8730.00

The radar chart summarizes major physicochemical dimensions for quick comparison, while exact numerical values remain listed on the left.

Amino Acid Composition

TPSA 1256.39

LogP -11.22

H-bond Donors 47.0

H-bond Acceptors 47.0

Rotatable Bonds 108.0

Heavy Atoms 220.0

Ring Count 5.0

Amide Bonds 30.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0303969 VERIFIED: NO

Provenance & Taxonomy

OrganismHeterometrus petersii [Animal]

Structure & Mods

Configlinear disulfide-stabilized peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Disulfide6-24, 10-20

Bio-Activity Profile

Function

Toxin

TargetPotassium channel inhibitor