Peptide Database

Peptide Namepara-kappa-casein var. A and B; bovine (Bos taurus) with modifications

Function Ontology

Annotation / Protein functional class ▸ Storage protein

Immunology ▸ Adverse immune reactivity ▸ Allergenicity ▸ Allergen

Standard StatusStandard

Sequence Length105 amino acids

Chemical FormulaC561H848N150O154S3

DescriptionStandard

        PEQNQEQPIRCEKDERFFSDKIAKYIPIQYVLSRYPSYGLNYYQQKPVALINNQFLPYPYYAKPAAVRSPAQILQWQVLSNTVPAKSCQAQPTTMARHPHPHLSF
    

Molecular Weight12253.84 Da

Isoelectric Point (pI)9.34

Net Charge (pH 7.0)5.20

Net Charge (pH 7.4) 4.93

Charge Density (pH 7.0) 0.0495

GRAVY Index-0.65

Hydrophobic Moment 0.57

Boman Index-0.05

Instability Index53.10

Aliphatic Index 70.67

Aromaticity 0.1333

Extinction Coeff. Reduced 18910.00

Extinction Coeff. Oxidized 19035.00

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

Amino Acid Composition

TPSA 4878.40

LogP -43.10

H-bond Donors 163.0

H-bond Acceptors 165.0

Rotatable Bonds 383.0

Heavy Atoms 868.0

Ring Count 31.0

Amide Bonds 121.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0101167 VERIFIED: YES

Provenance & Taxonomy

OrganismBos taurus [Animal]

FamilyCasein

Tax ID9913;0

Structure & Mods

Configlinear peptide [Linear]

Chiralitynoncanonical stereochemical modification [Modified]

N-TermPyroglutamate

DisulfideCys positions 11,88; source marks cysteine residue(s) as disulfide-bonded, exact pairing unresolved

Other ModsPyroglutamate: 1

Bio-Activity Profile

Function

Allergen Storage Protein