Peptide Database

Peptide NameTrypsin inhibitor CPTI-III

Function Ontology

Other / Curated residual function label ▸ Generic enzyme inhibition annotation

Standard StatusStandard

Sequence Length32 amino acids

Chemical FormulaC151H244N42O49S7

DescriptionStandard

        HEERVCPKILMECKKDSDCLAECICLEHGYCG
    

Molecular Weight3656.26 Da

Isoelectric Point (pI)5.05

Net Charge (pH 7.0)-3.11

Net Charge (pH 7.4) -3.52

Charge Density (pH 7.0) -0.0973

GRAVY Index-0.26

Hydrophobic Moment 0.52

Boman Index-0.07

Instability Index66.53

Aliphatic Index 73.12

Aromaticity 0.0312

Extinction Coeff. Reduced 1490.00

Extinction Coeff. Oxidized 1865.00

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

Amino Acid Composition

TPSA 1455.51

LogP -12.77

H-bond Donors 55.0

H-bond Acceptors 55.0

Rotatable Bonds 124.0

Heavy Atoms 249.0

Ring Count 4.0

Amide Bonds 31.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0407539 VERIFIED: NO

Provenance & Taxonomy

OrganismCucurbita pepo [Plant]

Structure & Mods

Configdisulfide-constrained cyclic peptide [Cyclic]

Chiralitycanonical L-amino-acid peptide [L]

Disulfide6-23; 13-25; 19-31

Bio-Activity Profile

Function

Enzyme inhibitory