Peptide Database

Peptide NameSIFamide

Function Ontology

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length12 amino acids

Chemical FormulaC65H95N17O17

DescriptionStandard

        GYRKPTFNGSIF
    

Molecular Weight1386.55 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-0.58

Hydrophobic Moment 0.21

Boman Index0.01

Instability Index-20.52

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 566.33

LogP -5.38

H-bond Donors 20.0

H-bond Acceptors 19.0

Rotatable Bonds 42.0

Heavy Atoms 99.0

Ring Count 4.0

Amide Bonds 12.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0398314 VERIFIED: NO

Provenance & Taxonomy

OrganismBalanus amphitrite [Animal]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

C-TermAmidation

Bio-Activity Profile

Function

Neuropeptide