Peptide Database

Peptide NameProtopolybiakinin-I

Function Ontology

Regulatory peptide ▸ Biological modulation

Standard StatusStandard

Sequence Length19 amino acids

Chemical FormulaC95H163N35O24

DescriptionStandard

        DKNKKPIRVGGRRPPGFTR
    

Molecular Weight2179.53 Da

Isoelectric Point (pI)12.00

Net Charge (pH 7.0)5.76

Net Charge (pH 7.4) 5.55

Charge Density (pH 7.0) 0.3031

GRAVY Index-1.68

Hydrophobic Moment 0.63

Boman Index-0.57

Instability Index65.95

Aliphatic Index 35.79

Aromaticity 0.0526

Extinction Coeff. Reduced 0.00

Extinction Coeff. Oxidized 0.00

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

Amino Acid Composition

TPSA 987.03

LogP -11.35

H-bond Donors 35.0

H-bond Acceptors 30.0

Rotatable Bonds 72.0

Heavy Atoms 154.0

Ring Count 4.0

Amide Bonds 19.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0066522 VERIFIED: YES

Provenance & Taxonomy

OrganismProtopolybia exigua [Animal]

FamilyProtopolybiakinin

Tax ID91439

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Bio-Activity Profile

Function

Receptor modulation

Targetisolated rat ileum muscle

Half-LifeMammalian: 1.1 hour; Yeast: 3 min; E. coli: >10 hour

RECORD: Rec_0159049 VERIFIED: YES