Peptide Database

Peptide NameCecropin B

Function Ontology

Antimicrobial

Antimicrobial ▸ Antibacterial ▸ Anti-Gram-negative

Standard StatusStandard

Sequence Length35 amino acids

Chemical FormulaC172H292N52O43

DescriptionStandard

        RWKIFKKIEKVGRNVRDGIIKAGPAVAVVGQAATV
    

Molecular Weight3776.48 Da

Isoelectric Point (pI)11.12

Net Charge (pH 7.0)5.76

Net Charge (pH 7.4) 5.55

Charge Density (pH 7.0) 0.1645

GRAVY Index0.09

Hydrophobic Moment 0.93

Boman Index0.02

Instability Index26.39

Aliphatic Index 108.57

Aromaticity 0.0571

Extinction Coeff. Reduced 5500.00

Extinction Coeff. Oxidized 5500.00

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

Amino Acid Composition

TPSA 1556.53

LogP -12.60

H-bond Donors 55.0

H-bond Acceptors 49.0

Rotatable Bonds 129.0

Heavy Atoms 267.0

Ring Count 4.0

Amide Bonds 36.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0053999 VERIFIED: YES

Provenance & Taxonomy

OrganismPapilio xuthus [Animal]

FamilyCecropin

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)