Peptide Database

Peptide NameOrexin A

Function Ontology

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length31 amino acids

Chemical FormulaC139H233N45O43S4

DescriptionStandard

        APDCCRQKTCSCRIYDILRGTGNHAAGILTL
    

Molecular Weight3350.87 Da

Isoelectric Point (pI)8.54

Net Charge (pH 7.0)1.84

Net Charge (pH 7.4) 1.54

Charge Density (pH 7.0) 0.0595

GRAVY Index-0.04

Hydrophobic Moment 0.61

Boman Index-0.04

Instability Index42.77

Aliphatic Index 85.16

Aromaticity 0.0323

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 1429.86

LogP -17.54

H-bond Donors 55.0

H-bond Acceptors 50.0

Rotatable Bonds 109.0

Heavy Atoms 231.0

Ring Count 3.0

Amide Bonds 32.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0128474 VERIFIED: NO

Provenance & Taxonomy

OrganismXenopus laevis [Animal]

Tax ID8355

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

C-TermAmidation

Bio-Activity Profile

Function

Neuropeptide