Peptide Database

Peptide NameHeat-stable enterotoxin ST-IA/ST-P

Function Ontology

Annotation / Sequence feature ▸ Nuclear export signal

Venom / Toxin ▸ General toxin ▸ Toxin

Venom / Toxin ▸ Toxin

Standard StatusStandard

Sequence Length18 amino acids

Chemical FormulaC81H116N20O26S6

DescriptionStandard

        NTFYCCELCCNPACAGCY
    

Molecular Weight1978.30 Da

Isoelectric Point (pI)4.05

Net Charge (pH 7.0)-1.30

Net Charge (pH 7.4) -1.59

Charge Density (pH 7.0) -0.0721

GRAVY Index0.52

Hydrophobic Moment 0.20

Boman Index0.22

Instability Index63.21

Aliphatic Index 32.78

Aromaticity 0.1667

Extinction Coeff. Reduced 2980.00

Extinction Coeff. Oxidized 3355.00

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

Amino Acid Composition

TPSA 733.40

LogP -8.42

H-bond Donors 30.0

H-bond Acceptors 31.0

Rotatable Bonds 56.0

Heavy Atoms 133.0

Ring Count 4.0

Amide Bonds 19.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0087354 VERIFIED: YES

Provenance & Taxonomy

OrganismEscherichia coli [Bacterium]

Familyheat-stable enterotoxin family

Tax ID562; 0

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Disulfide5-10; 6-14; 9-17

Bio-Activity Profile

Function

Toxin Venom heat-stable enterotoxin family Pathogenesis-associated

RECORD: Rec_0187782 VERIFIED: NO

Provenance & Taxonomy

OrganismEscherichia coli [Bacterium]; Citrobacter freundii [Bacterium]

Tax ID562

Structure & Mods

Configdisulfide-constrained cyclic peptide [Cyclic]

Chiralitycanonical L-amino-acid peptide [L]

Disulfide5-10; 6-14; 9-17

Bio-Activity Profile

Function

cGMP Activator