Peptide Database

Peptide NameOrcokinin II 1

Function Ontology

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length13 amino acids

Chemical FormulaC66H100N20O22S

DescriptionStandard

        NFDEIDRAGFRSM
    

Molecular Weight1557.69 Da

Isoelectric Point (pI)4.56

Net Charge (pH 7.0)-1.23

Net Charge (pH 7.4) -1.44

Charge Density (pH 7.0) -0.0950

GRAVY Index-0.80

Hydrophobic Moment 0.69

Boman Index-0.24

Instability Index49.98

Aliphatic Index 37.69

Aromaticity 0.1538

Extinction Coeff. Reduced 0.00

Extinction Coeff. Oxidized 0.00

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

Amino Acid Composition

TPSA 711.54

LogP -7.64

H-bond Donors 25.0

H-bond Acceptors 22.0

Rotatable Bonds 52.0

Heavy Atoms 109.0

Ring Count 2.0

Amide Bonds 13.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0329459 VERIFIED: NO

Provenance & Taxonomy

OrganismLatrodectus hesperus [Animal] [Animal]; Stegodyphus mimosarum [Animal] [Animal]; Latrodectus tredecimguttatus [Animal]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

C-TermAmidation

Bio-Activity Profile

Function

Neuropeptide