Peptide Database

Peptide NameCholecystokinin

Function Ontology

Gastrointestinal bioactivity

Hormonal / Endocrine ▸ Hormone peptide

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length110 amino acids

Chemical FormulaC523H819N165O166S2

DescriptionStandard

        QQPAGSHDGSPVAAELQQSLTEPHRHSRAPSSAGPLKPAPRLDGSFEQRATIGALLAKYLQQARKGSTGRFSVLGNRVQSIDPTHRINDRDYMGWMDFGRRSAEEYEYSS
    

Molecular Weight12138.23 Da

Isoelectric Point (pI)9.22

Net Charge (pH 7.0)2.13

Net Charge (pH 7.4) 1.70

Charge Density (pH 7.0) 0.0193

GRAVY Index-0.90

Hydrophobic Moment 0.60

Boman Index-0.18

Instability Index69.73

Aliphatic Index 56.91

Aromaticity 0.0727

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 5357.70

LogP -67.47

H-bond Donors 187.0

H-bond Acceptors 174.0

Rotatable Bonds 397.0

Heavy Atoms 856.0

Ring Count 21.0

Amide Bonds 119.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0208910 VERIFIED: NO

Provenance & Taxonomy

OrganismGallus gallus [Animal]

FamilyGastrin/cholecystokinin

Tax ID9031

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Other ModsTyr92 Sulfotyrosine; Phe98 Amidation; Tyr106 Sulfotyrosine; Tyr108 Sulfotyrosine

Bio-Activity Profile

Function

Hormone Gastrointestinal Neuropeptide