Peptide Database

Peptide NameSomatostatin-28 II

Function Ontology

Hormonal / Endocrine ▸ Hormone peptide

Standard StatusStandard

Sequence Length28 amino acids

Chemical FormulaC140H213N41O42S2

DescriptionStandard

        SVDSTNNLPPRERKAGCKNFYWKGFTSC
    

Molecular Weight3206.57 Da

Isoelectric Point (pI)9.30

Net Charge (pH 7.0)2.44

Net Charge (pH 7.4) 2.20

Charge Density (pH 7.0) 0.0872

GRAVY Index-0.99

Hydrophobic Moment 0.39

Boman Index-0.22

Instability Index28.03

Aliphatic Index 27.86

Aromaticity 0.1429

Extinction Coeff. Reduced 6990.00

Extinction Coeff. Oxidized 7115.00

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

Amino Acid Composition

TPSA 1374.34

LogP -16.88

H-bond Donors 50.0

H-bond Acceptors 47.0

Rotatable Bonds 102.0

Heavy Atoms 225.0

Ring Count 7.0

Amide Bonds 30.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0070531 VERIFIED: NO

Provenance & Taxonomy

OrganismLophius piscatorius [Animal]

FamilySomatostatin

Structure & Mods

Configdisulfide-constrained cyclic peptide [Cyclic]

Chiralitycanonical L-amino-acid peptide [L]

Disulfide17-28

Bio-Activity Profile

Function

Hormone

RECORD: Rec_0222063 VERIFIED: YES

Provenance & Taxonomy

OrganismLophius americanus [Animal]

Familysomatostatin

Tax ID8073

Structure & Mods

Configlinear peptide with reported disulfide constraint [Linear]

Chiralitynoncanonical stereochemical modification [Modified]

Disulfide17-28

Other Mods23:5-hydroxylysine

Bio-Activity Profile

Function

Hormone Endocrine

Half-LifeMammalian: 1.9 hour; Yeast: >20 hour; E. coli: >10 hour