Peptide Database

Peptide NameBombyxin A-4 B chain

Function Ontology

Hormonal / Endocrine ▸ Hormone peptide

Regulatory peptide ▸ Biological regulation

Standard StatusStandard

Sequence Length28 amino acids

Chemical FormulaC134H206N42O41S2

DescriptionStandard

        QQPQGVHTYCGRHLARTLADLCWEAGVD
    

Molecular Weight3125.46 Da

Isoelectric Point (pI)6.02

Net Charge (pH 7.0)-1.08

Net Charge (pH 7.4) -1.42

Charge Density (pH 7.0) -0.0385

GRAVY Index-0.45

Hydrophobic Moment 0.76

Boman Index-0.02

Instability Index34.52

Aliphatic Index 73.21

Aromaticity 0.0714

Extinction Coeff. Reduced 6990.00

Extinction Coeff. Oxidized 7115.00

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

Amino Acid Composition

TPSA 1339.04

LogP -14.24

H-bond Donors 48.0

H-bond Acceptors 44.0

Rotatable Bonds 98.0

Heavy Atoms 219.0

Ring Count 6.0

Amide Bonds 30.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0109952 VERIFIED: YES

Provenance & Taxonomy

OrganismBombyx mori [Animal]

FamilyBombyxin

Tax ID7091

Structure & Mods

Configlinear peptide [Linear]

Chiralitynoncanonical stereochemical modification [Modified]

N-TermPyroglutamate

Bio-Activity Profile

Function

Hormone Endocrine Growth regulation Development regulation

Targetpeptide responsible for activation of prothoracic gland

Half-LifeMammalian: 0.8 hour; Yeast: 10 min; E. coli: >10 hour

RECORD: Rec_0186910 VERIFIED: YES