Peptide Database

Peptide NameTrypsin inhibitor 3

Function Ontology

Enzyme modulation ▸ Enzyme inhibition ▸ Protease inhibition

Standard StatusStandard

Sequence Length30 amino acids

Chemical FormulaC136H229N47O43S6

DescriptionStandard

        QRACPRILKKCRRDSDCPGECICKENGYCG
    

Molecular Weight3402.95 Da

Isoelectric Point (pI)8.66

Net Charge (pH 7.0)2.70

Net Charge (pH 7.4) 2.40

Charge Density (pH 7.0) 0.0901

GRAVY Index-0.92

Hydrophobic Moment 0.80

Boman Index-0.39

Instability Index68.04

Aliphatic Index 42.33

Aromaticity 0.0333

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 1491.14

LogP -18.70

H-bond Donors 58.0

H-bond Acceptors 52.0

Rotatable Bonds 115.0

Heavy Atoms 232.0

Ring Count 3.0

Amide Bonds 31.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0184042 VERIFIED: YES

Provenance & Taxonomy

OrganismMomordica cochinchinensis [Animal]

Familyprotease inhibitor I7 (squash-type serine protease inhibitor) family

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

N-TermPyroglutamate

Disulfide4-21; 11-23; 17-29

Bio-Activity Profile

Function

Other protease inhibitor I7 (squash-type serine protease inhibitor) family

RECORD: Rec_0348543 VERIFIED: YES

Provenance & Taxonomy

OrganismMomordica cochinchinensis [Plant]

FamilySquash trypsin inhibitor

Tax ID3674