Peptide Database

Peptide Namekappa-casein var. A; bovine (Bos taurus) with modifications

Function Ontology

Annotation / Protein functional class ▸ Storage protein

Immunology ▸ Adverse immune reactivity ▸ Allergenicity ▸ Allergen

Standard StatusStandard

Sequence Length169 amino acids

Chemical FormulaC849H1322N222O261S4

DescriptionStandard

        PEQNQEQPIRCEKDERFFSDKIAKYIPIQYVLSRYPSYGLNYYQQKPVALINNQFLPYPYYAKPAAVRSPAQILQWQVLSNTVPAKSCQAQPTTMARHPHPHLSFMAIPPKKNQDKTEIPTINTIASGEPTSTPTTEAVESTVATLEDSPEVIESPPEINTVQVTSTAV
    

Molecular Weight18943.17 Da

Isoelectric Point (pI)5.94

Net Charge (pH 7.0)-1.78

Net Charge (pH 7.4) -2.07

Charge Density (pH 7.0) -0.0105

GRAVY Index-0.55

Hydrophobic Moment 0.57

Boman Index-0.01

Instability Index57.35

Aliphatic Index 73.31

Aromaticity 0.0828

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 7701.13

LogP -84.16

H-bond Donors 255.0

H-bond Acceptors 266.0

Rotatable Bonds 596.0

Heavy Atoms 1336.0

Ring Count 39.0

Amide Bonds 190.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0330710 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; Phosphoserine: 127

Bio-Activity Profile

Function

Allergen Storage Protein