Peptide Database

Peptide NameSIFamide

Function Ontology

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length12 amino acids

Chemical FormulaC61H92N18O16

DescriptionStandard

        GNRKPPFNGSIF
    

Molecular Weight1333.49 Da

Isoelectric Point (pI)11.00

Net Charge (pH 7.0)1.76

Net Charge (pH 7.4) 1.55

Charge Density (pH 7.0) 0.1466

GRAVY Index-0.84

Hydrophobic Moment 0.19

Boman Index-0.07

Instability Index15.38

Aliphatic Index 32.50

Aromaticity 0.1667

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 560.17

LogP -6.33

H-bond Donors 18.0

H-bond Acceptors 18.0

Rotatable Bonds 40.0

Heavy Atoms 95.0

Ring Count 4.0

Amide Bonds 13.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0238336 VERIFIED: NO

Provenance & Taxonomy

OrganismAnurida maritima [Animal]; Podura aquatica [Animal]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

C-TermAmidation

Bio-Activity Profile

Function

Neuropeptide