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 Length10 amino acids

Chemical FormulaC50H71N13O18

DescriptionStandard

        FDEIDRSGFG
    

Molecular Weight1142.17 Da

Isoelectric Point (pI)4.05

Net Charge (pH 7.0)-2.23

Net Charge (pH 7.4) -2.44

Charge Density (pH 7.0) -0.2235

GRAVY Index-0.65

Hydrophobic Moment 0.51

Boman Index-0.05

Instability Index77.00

Aliphatic Index 39.00

Aromaticity 0.2000

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 519.25

LogP -5.37

H-bond Donors 18.0

H-bond Acceptors 16.0

Rotatable Bonds 37.0

Heavy Atoms 81.0

Ring Count 2.0

Amide Bonds 9.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0105706 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_0105798 VERIFIED: NO

Provenance & Taxonomy

OrganismCallinectes sapidus [Animal]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Bio-Activity Profile

Function

Neuropeptide

RECORD: Rec_0392840 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

Myotropic

Half-LifeMammalian: 1.1 hour; Yeast: 3 min; E. coli: 2 min