Peptide Database

Peptide NameCholecystokinin

Function Ontology

Gastrointestinal bioactivity

Hormonal / Endocrine ▸ Hormone peptide

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length110 amino acids

Chemical FormulaC523H831N169O165S3

DescriptionStandard

        QQTAGSHNGNPLAAELEQSLTEHHRHVRAPSSAGPLKPVPRLDGSIDQRANIGALLAKYLQQARKGPTGRISVMGNRVQSIDPTHRINDRDYMGWMDFGRRSAEEYEYSS
    

Molecular Weight12222.42 Da

Isoelectric Point (pI)9.22

Net Charge (pH 7.0)2.21

Net Charge (pH 7.4) 1.73

Charge Density (pH 7.0) 0.0201

GRAVY Index-0.88

Hydrophobic Moment 0.60

Boman Index-0.18

Instability Index55.33

Aliphatic Index 65.73

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 5420.66

LogP -66.63

H-bond Donors 188.0

H-bond Acceptors 175.0

Rotatable Bonds 404.0

Heavy Atoms 860.0

Ring Count 19.0

Amide Bonds 121.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0053350 VERIFIED: NO

Provenance & Taxonomy

OrganismStruthio camelus [Animal]

FamilyGastrin/cholecystokinin

Tax ID8801

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