Peptide Database

Peptide Namekappa-casein var. B2; 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 FormulaC848H1322N222O259S4

DescriptionStandard

        PEQNQEQPIRCEKDERFFSDKIAKYIPIQYVLSRYPSYGLNYYQQKPVALINNQFLPYPYYAKPAAVRSPAQILQWQVLSNTVPAKSCQAQPTTMARHPHPHLSFMAIPPKKNQDKTEIPTINTIASGEPTSTPTIEAVESTVATLEASPEVTESPPEINTVQVTSTAV
    

Molecular Weight18899.16 Da

Isoelectric Point (pI)6.37

Net Charge (pH 7.0)-0.78

Net Charge (pH 7.4) -1.07

Charge Density (pH 7.0) -0.0046

GRAVY Index-0.51

Hydrophobic Moment 0.57

Boman Index-0.00

Instability Index54.57

Aliphatic Index 73.91

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 7663.83

LogP -83.74

H-bond Donors 254.0

H-bond Acceptors 265.0

Rotatable Bonds 594.0

Heavy Atoms 1333.0

Ring Count 39.0

Amide Bonds 190.0

3D PDB MODEL

Drag to rotate. Click a residue or atom to inspect it; the selected residue is highlighted in amber in the current view mode. Use the buttons to zoom.

2D CHEMICAL STRUCTURE

Drag to move

Drag to move. Use the buttons to zoom.

RECORD: Rec_0093681 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