Peptide Database

Peptide NameBombyxin A-3 homolog A chain

Function Ontology

Hormonal / Endocrine ▸ Hormone peptide

Regulatory peptide ▸ Biological regulation

Standard StatusStandard

Sequence Length21 amino acids

Chemical FormulaC94H148N24O36S4

DescriptionStandard

        QGIAEECCNKPCTEDELLGYC
    

Molecular Weight2318.58 Da

Isoelectric Point (pI)4.05

Net Charge (pH 7.0)-4.27

Net Charge (pH 7.4) -4.54

Charge Density (pH 7.0) -0.2033

GRAVY Index-0.42

Hydrophobic Moment 0.32

Boman Index-0.02

Instability Index75.85

Aliphatic Index 60.48

Aromaticity 0.0476

Extinction Coeff. Reduced 1490.00

Extinction Coeff. Oxidized 1740.00

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

Amino Acid Composition

TPSA 975.69

LogP -10.73

H-bond Donors 35.0

H-bond Acceptors 36.0

Rotatable Bonds 76.0

Heavy Atoms 158.0

Ring Count 2.0

Amide Bonds 22.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0301565 VERIFIED: YES

Provenance & Taxonomy

OrganismSamia cynthia [Animal]

FamilyBombyxin A-3 homolog

Tax ID7127

Structure & Mods

Configlinear peptide with reported disulfide constraint [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Disulfide7-12

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