Peptide Database

Peptide NameCholecystokinin

Function Ontology

Gastrointestinal bioactivity

Hormonal / Endocrine ▸ Hormone peptide

Neurological / Signaling ▸ Neuropeptide activity ▸ Neuropeptide

Standard StatusStandard

Sequence Length110 amino acids

Chemical FormulaC536H849N167O170S4

DescriptionStandard

        QQTVGSMNEDPGAREIEQQNILQHPRHIRASSSAQLKPFQRIDGTSDQKAVIGAMLAKYLQTRKAGSSTGRYAVLPNRPVIDPTHRINDRDYMGWMDFGRRSAEEYEYSS
    

Molecular Weight12480.75 Da

Isoelectric Point (pI)9.10

Net Charge (pH 7.0)2.04

Net Charge (pH 7.4) 1.65

Charge Density (pH 7.0) 0.0185

GRAVY Index-0.92

Hydrophobic Moment 0.63

Boman Index-0.20

Instability Index66.67

Aliphatic Index 61.27

Aromaticity 0.0727

Extinction Coeff. Reduced 12950.00

Extinction Coeff. Oxidized 12950.00

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

Amino Acid Composition

TPSA 5518.96

LogP -65.81

H-bond Donors 192.0

H-bond Acceptors 179.0

Rotatable Bonds 417.0

Heavy Atoms 877.0

Ring Count 18.0

Amide Bonds 122.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0077851 VERIFIED: NO

Provenance & Taxonomy

OrganismLithobates catesbeiana [Animal]

FamilyGastrin/cholecystokinin

Tax ID8400

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