Peptide Database

Peptide NameSulfakinin-1

Function Ontology

Gastrointestinal bioactivity

Hormonal / Endocrine ▸ Hormone peptide

Neurological / Signaling ▸ Neuromodulation

Neurological / Signaling ▸ Neuromuscular and muscle activity ▸ Myotropic activity

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length10 amino acids

Chemical FormulaC53H74N16O18S

DescriptionStandard

        QSDDYGHMRF
    

Molecular Weight1255.32 Da

Isoelectric Point (pI)5.21

Net Charge (pH 7.0)-1.15

Net Charge (pH 7.4) -1.41

Charge Density (pH 7.0) -0.1152

GRAVY Index-1.60

Hydrophobic Moment 0.17

Boman Index-0.32

Instability Index36.91

Aliphatic Index 0.00

Aromaticity 0.2000

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 573.95

LogP -6.23

H-bond Donors 20.0

H-bond Acceptors 19.0

Rotatable Bonds 40.0

Heavy Atoms 88.0

Ring Count 3.0

Amide Bonds 10.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0210864 VERIFIED: YES

Provenance & Taxonomy

OrganismEurycotis floridana [Animal]

FamilyGastrin/cholecystokinin

Tax ID303877

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

N-TermPyroglutamate

C-TermAmidation

Other ModsTyr5 Sulfotyrosine

Bio-Activity Profile

Function

Hormone Gastrointestinal Neuropeptide

RECORD: Rec_0383022 VERIFIED: YES