Peptide Database

Peptide NameCecropin B

Function Ontology

Antimicrobial

Antimicrobial ▸ Antibacterial ▸ Anti-Gram-negative

Standard StatusStandard

Sequence Length35 amino acids

Chemical FormulaC175H296N52O45

DescriptionStandard

        RWKIFKKIEKVGRNVRDGIIKAGPAVAVVEQAATV
    

Molecular Weight3848.54 Da

Isoelectric Point (pI)10.55

Net Charge (pH 7.0)4.76

Net Charge (pH 7.4) 4.55

Charge Density (pH 7.0) 0.1361

GRAVY Index0.00

Hydrophobic Moment 0.93

Boman Index-0.01

Instability Index34.32

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 1593.83

LogP -12.37

H-bond Donors 56.0

H-bond Acceptors 50.0

Rotatable Bonds 132.0

Heavy Atoms 272.0

Ring Count 4.0

Amide Bonds 36.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0151695 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)