Peptide Database

Peptide NameOrexin-1

Function Ontology

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length36 amino acids

Chemical FormulaC177H301N61O51S6

DescriptionStandard

        DRRCCQRTRVCKIPSDCTCVTKELVCKYHVRNNIHI
    

Molecular Weight4292.05 Da

Isoelectric Point (pI)9.15

Net Charge (pH 7.0)4.88

Net Charge (pH 7.4) 4.48

Charge Density (pH 7.0) 0.1354

GRAVY Index-0.51

Hydrophobic Moment 0.48

Boman Index-0.32

Instability Index62.93

Aliphatic Index 75.56

Aromaticity 0.0278

Extinction Coeff. Reduced 1490.00

Extinction Coeff. Oxidized 1865.00

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

Amino Acid Composition

TPSA 1860.27

LogP -21.19

H-bond Donors 73.0

H-bond Acceptors 64.0

Rotatable Bonds 144.0

Heavy Atoms 295.0

Ring Count 4.0

Amide Bonds 38.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0399620 VERIFIED: NO

Provenance & Taxonomy

OrganismHolothuria scabra [Animal]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

C-TermAmidation

Bio-Activity Profile

Function

Neuropeptide