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 Length9 amino acids

Chemical FormulaC46H66N12O15

DescriptionStandard

        EIDRSGFGF
    

Molecular Weight1027.09 Da

Isoelectric Point (pI)4.37

Net Charge (pH 7.0)-1.16

Net Charge (pH 7.4) -1.33

Charge Density (pH 7.0) -0.1291

GRAVY Index-0.33

Hydrophobic Moment 0.49

Boman Index0.04

Instability Index70.73

Aliphatic Index 43.33

Aromaticity 0.2222

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 452.85

LogP -4.33

H-bond Donors 16.0

H-bond Acceptors 14.0

Rotatable Bonds 33.0

Heavy Atoms 73.0

Ring Count 2.0

Amide Bonds 8.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0121447 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_0142317 VERIFIED: YES