Peptide Database

Peptide NameBombyxin A-2 homolog A chain

Function Ontology

Hormonal / Endocrine ▸ Hormone peptide

Regulatory peptide ▸ Biological regulation

Standard StatusStandard

Sequence Length23 amino acids

Chemical FormulaC111H174N28O38S4

DescriptionStandard

        QGIVEECCNKPCTENELLGYCYK
    

Molecular Weight2636.99 Da

Isoelectric Point (pI)4.49

Net Charge (pH 7.0)-2.27

Net Charge (pH 7.4) -2.55

Charge Density (pH 7.0) -0.0988

GRAVY Index-0.51

Hydrophobic Moment 0.35

Boman Index-0.05

Instability Index58.06

Aliphatic Index 63.48

Aromaticity 0.0870

Extinction Coeff. Reduced 2980.00

Extinction Coeff. Oxidized 3230.00

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

Amino Acid Composition

TPSA 1085.93

LogP -10.64

H-bond Donors 39.0

H-bond Acceptors 40.0

Rotatable Bonds 87.0

Heavy Atoms 181.0

Ring Count 3.0

Amide Bonds 25.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0147007 VERIFIED: YES

Provenance & Taxonomy

OrganismSamia cynthia [Animal]

FamilyBombyxin A-2 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