Peptide Database

Peptide NameCholecystokinin

Function Ontology

Gastrointestinal bioactivity

Hormonal / Endocrine ▸ Hormone peptide

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length115 amino acids

Chemical FormulaC546H870N172O184S

DescriptionStandard

        HPISSQHLDEGQRSISTPSEALLEADTHSLGEPHLRQSRSAPQLKSLPVAEEDGDSRANLSELLARLISSRKGSVRRNSTAYSKGLSPNHRIADRDYLGWMDFGRRSAEEYEYSS
    

Molecular Weight12819.86 Da

Isoelectric Point (pI)6.22

Net Charge (pH 7.0)-1.78

Net Charge (pH 7.4) -2.26

Charge Density (pH 7.0) -0.0154

GRAVY Index-0.92

Hydrophobic Moment 0.63

Boman Index-0.22

Instability Index72.80

Aliphatic Index 70.52

Aromaticity 0.0522

Extinction Coeff. Reduced 11460.00

Extinction Coeff. Oxidized 11460.00

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

Amino Acid Composition

TPSA 5789.97

LogP -74.07

H-bond Donors 206.0

H-bond Acceptors 188.0

Rotatable Bonds 429.0

Heavy Atoms 903.0

Ring Count 18.0

Amide Bonds 121.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0003081 VERIFIED: NO

Provenance & Taxonomy

OrganismParalichthys olivaceus [Animal]

FamilyGastrin/cholecystokinin

Tax ID8255

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Other ModsTyr97 Sulfotyrosine; Phe103 Amidation; Tyr111 Sulfotyrosine; Tyr113 Sulfotyrosine

Bio-Activity Profile

Function

Hormone Gastrointestinal Neuropeptide