Peptide Database

Peptide NameNeurotoxin PKTx21C2 [2-32]

Function Ontology

Venom / Toxin ▸ General toxin ▸ Toxin

Standard StatusStandard

Sequence Length31 amino acids

Chemical FormulaC136H215N43O44S8

DescriptionStandard

        FCKYNGEQCTSDGQCCNGRCRTAFMGKICMG
    

Molecular Weight3412.94 Da

Isoelectric Point (pI)8.33

Net Charge (pH 7.0)1.70

Net Charge (pH 7.4) 1.40

Charge Density (pH 7.0) 0.0549

GRAVY Index-0.41

Hydrophobic Moment 0.23

Boman Index-0.10

Instability Index14.45

Aliphatic Index 15.81

Aromaticity 0.0968

Extinction Coeff. Reduced 1490.00

Extinction Coeff. Oxidized 1865.00

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

Amino Acid Composition

TPSA 1440.04

LogP -20.16

H-bond Donors 56.0

H-bond Acceptors 54.0

Rotatable Bonds 115.0

Heavy Atoms 231.0

Ring Count 3.0

Amide Bonds 34.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0279852 VERIFIED: NO

Provenance & Taxonomy

OrganismPhoneutria keyserlingi,Ctenus keyserlingii [Animal]

Structure & Mods

Configdisulfide-constrained cyclic peptide [Cyclic]

Chiralitycanonical L-amino-acid peptide [L]

Disulfide2-16; 9-20; 15-29

Bio-Activity Profile

Function

Toxin