Peptide Database

Peptide NameSIFamide

Function Ontology

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length13 amino acids

Chemical FormulaC71H102N18O17

DescriptionStandard

        GPYRKPPFNGSIF
    

Molecular Weight1479.68 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) 0.1352

GRAVY Index-0.73

Hydrophobic Moment 0.21

Boman Index0.03

Instability Index8.49

Aliphatic Index 30.00

Aromaticity 0.2308

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 557.62

LogP -4.26

H-bond Donors 18.0

H-bond Acceptors 19.0

Rotatable Bonds 41.0

Heavy Atoms 106.0

Ring Count 6.0

Amide Bonds 13.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0146743 VERIFIED: NO

Provenance & Taxonomy

OrganismEchinogammarus veneris [Animal]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

C-TermAmidation

Bio-Activity Profile

Function

Neuropeptide