Peptide Database

Peptide NamePotassium channel toxin kappa-KTx 1.4

Function Ontology

Venom / Toxin ▸ General toxin ▸ Toxin

Standard StatusStandard

Sequence Length23 amino acids

Chemical FormulaC105H158N32O31S5

DescriptionStandard

        GFGCFRSCWKAGHDDKTCKSMCG
    

Molecular Weight2524.90 Da

Isoelectric Point (pI)8.52

Net Charge (pH 7.0)1.81

Net Charge (pH 7.4) 1.49

Charge Density (pH 7.0) 0.0786

GRAVY Index-0.52

Hydrophobic Moment 0.59

Boman Index-0.09

Instability Index49.45

Aliphatic Index 4.35

Aromaticity 0.1304

Extinction Coeff. Reduced 5500.00

Extinction Coeff. Oxidized 5750.00

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

Amino Acid Composition

TPSA 1023.24

LogP -12.78

H-bond Donors 41.0

H-bond Acceptors 39.0

Rotatable Bonds 83.0

Heavy Atoms 173.0

Ring Count 5.0

Amide Bonds 22.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0210532 VERIFIED: NO

Provenance & Taxonomy

OrganismHeterometrus petersii [Animal]

Structure & Mods

Configlinear disulfide-stabilized peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Disulfide4-22, 8-18

Bio-Activity Profile

Function

Toxin

TargetPotassium channel inhibitor