Peptide Database

Peptide NameCCK9 (Cholecystokinin-9)

Function Ontology

Hormonal / Endocrine ▸ Hormone peptide

Standard StatusStandard

Sequence Length9 amino acids

Chemical FormulaC62H76N14O15

DescriptionStandard

        RDYWGWLDF
    

Molecular Weight1257.35 Da

Isoelectric Point (pI)4.21

Net Charge (pH 7.0)-1.24

Net Charge (pH 7.4) -1.44

Charge Density (pH 7.0) -0.1376

GRAVY Index-0.93

Hydrophobic Moment 0.41

Boman Index0.03

Instability Index4.89

Aliphatic Index 43.33

Aromaticity 0.4444

Extinction Coeff. Reduced 12490.00

Extinction Coeff. Oxidized 12490.00

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

Amino Acid Composition

TPSA 484.43

LogP -0.19

H-bond Donors 18.0

H-bond Acceptors 14.0

Rotatable Bonds 35.0

Heavy Atoms 91.0

Ring Count 6.0

Amide Bonds 8.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0371306 VERIFIED: YES

Provenance & Taxonomy

Organismnot reported [other]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

N-TermNone

C-TermAmidation

Other ModsSulphation of Tyrosine residue at position 3

Bio-Activity Profile

Function

Intestinal hormone

MethodHPLC

Half-LifeHuman plasma, in vitro; 162 s