Peptide Database

Peptide NameOrcokinin

Function Ontology

Neurological / Signaling ▸ Neuromuscular and muscle activity ▸ Myotropic activity

Neurological / Signaling ▸ Neuropeptide activity ▸ Invertebrate neuropeptide

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length13 amino acids

Chemical FormulaC69H96N16O24

DescriptionStandard

        DFDEIDRSSFGFV
    

Molecular Weight1533.59 Da

Isoelectric Point (pI)4.05

Net Charge (pH 7.0)-3.23

Net Charge (pH 7.4) -3.44

Charge Density (pH 7.0) -0.2487

GRAVY Index-0.26

Hydrophobic Moment 0.49

Boman Index0.01

Instability Index70.55

Aliphatic Index 52.31

Aromaticity 0.2308

Extinction Coeff. Reduced 0.00

Extinction Coeff. Oxidized 0.00

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

Amino Acid Composition

TPSA 664.08

LogP -6.19

H-bond Donors 23.0

H-bond Acceptors 21.0

Rotatable Bonds 49.0

Heavy Atoms 109.0

Ring Count 3.0

Amide Bonds 12.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0099728 VERIFIED: YES

Provenance & Taxonomy

OrganismCallinectes sapidus [Animal]

FamilyOrcokinin

Tax ID6763

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Bio-Activity Profile

Function

Neuropeptide Invertebrate neuropeptide

PaperDiscovery and characterization of the Crustacean hyperglycemic hormone precursor related peptides (CPRP) and orcokinin neuropeptides in the sinus glands of the blue crab Callinectes sapidus using multiple tandem mass spectrometry techniques PMID21740068 Evidence URLhttps://pubmed.ncbi.nlm.nih.gov/21740068/

RECORD: Rec_0191957 VERIFIED: YES