Peptide Database

Peptide NameCirculin B

Function Ontology

Antimicrobial

Antimicrobial ▸ Antibacterial ▸ Anti-Gram-negative

Standard StatusStandard

Sequence Length31 amino acids

Chemical FormulaC138H216N34O43S6

DescriptionStandard

        GGTPCGESCVYIPCFTAVVGCTCKDKVCYLN
    

Molecular Weight3231.78 Da

Isoelectric Point (pI)6.03

Net Charge (pH 7.0)-0.30

Net Charge (pH 7.4) -0.60

Charge Density (pH 7.0) -0.0097

GRAVY Index0.52

Hydrophobic Moment 0.27

Boman Index0.23

Instability Index16.86

Aliphatic Index 65.81

Aromaticity 0.0968

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 1209.85

LogP -13.46

H-bond Donors 47.0

H-bond Acceptors 49.0

Rotatable Bonds 98.0

Heavy Atoms 221.0

Ring Count 5.0

Amide Bonds 31.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0099053 VERIFIED: YES

Provenance & Taxonomy

OrganismPigea floribunda [Plant]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Bio-Activity Profile

Function

Antimicrobial Anti-Gram-negative

TargetEscherichia coli TOP10

MethodMex pooled growth assay (OD_ID at 4.5 h; Wald adjusted p-value)