Peptide Database

Peptide NameSIFamide

Function Ontology

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length12 amino acids

Chemical FormulaC68H98N18O17

DescriptionStandard

        NYRKPPFNGSIF
    

Molecular Weight1439.62 Da

Isoelectric Point (pI)9.99

Net Charge (pH 7.0)1.76

Net Charge (pH 7.4) 1.55

Charge Density (pH 7.0) 0.1465

GRAVY Index-0.92

Hydrophobic Moment 0.21

Boman Index-0.09

Instability Index8.37

Aliphatic Index 32.50

Aromaticity 0.2500

Extinction Coeff. Reduced 1490.00

Extinction Coeff. Oxidized 1490.00

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

Amino Acid Composition

TPSA 580.40

LogP -5.01

H-bond Donors 19.0

H-bond Acceptors 19.0

Rotatable Bonds 42.0

Heavy Atoms 103.0

Ring Count 5.0

Amide Bonds 13.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0166465 VERIFIED: NO

Provenance & Taxonomy

OrganismLithobius forficatus [Animal]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

C-TermAmidation

Bio-Activity Profile

Function

Neuropeptide