Peptide Database

Peptide NameCholecystokinin

Function Ontology

Gastrointestinal bioactivity

Hormonal / Endocrine ▸ Hormone peptide

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length110 amino acids

Chemical FormulaC530H843N171O170S4

DescriptionStandard

        QQATGSHNENPVATELEQSLTEHHRHVRVPSSAGQLKPIQRLDGNVDQKANIGALLAKYLQQARKGPTGRISMMGNRVQNIDPTHRINDRDYMGWMDFGRRSAEEYEYSS
    

Molecular Weight12458.67 Da

Isoelectric Point (pI)8.30

Net Charge (pH 7.0)1.21

Net Charge (pH 7.4) 0.73

Charge Density (pH 7.0) 0.0110

GRAVY Index-1.01

Hydrophobic Moment 0.61

Boman Index-0.21

Instability Index54.98

Aliphatic Index 63.00

Aromaticity 0.0545

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 5591.79

LogP -68.54

H-bond Donors 192.0

H-bond Acceptors 180.0

Rotatable Bonds 420.0

Heavy Atoms 875.0

Ring Count 17.0

Amide Bonds 125.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0064051 VERIFIED: YES

Provenance & Taxonomy

OrganismTrachemys scripta [Animal]

FamilyGastrin/cholecystokinin

Tax ID34903

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