Peptide Database

Peptide NameBarley peptide B22

Function Ontology

Immunology ▸ Immunomodulation ▸ Celiac-immunogenic

Standard StatusStandard

Sequence Length12 amino acids

Chemical FormulaC68H96N18O19

DescriptionStandard

        QQPFQPQQPFPQ
    

Molecular Weight1469.60 Da

Isoelectric Point (pI)5.53

Net Charge (pH 7.0)-0.24

Net Charge (pH 7.4) -0.44

Charge Density (pH 7.0) -0.0200

GRAVY Index-1.82

Hydrophobic Moment 0.27

Boman Index-0.19

Instability Index169.67

Aliphatic Index 0.00

Aromaticity 0.1667

Extinction Coeff. Reduced 0.00

Extinction Coeff. Oxidized 0.00

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

Amino Acid Composition

TPSA 606.80

LogP -6.17

H-bond Donors 15.0

H-bond Acceptors 19.0

Rotatable Bonds 41.0

Heavy Atoms 105.0

Ring Count 6.0

Amide Bonds 17.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0172626 VERIFIED: YES

Provenance & Taxonomy

OrganismHordeum vulgare [Plant]

FamilyHordein

Tax ID4513

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Other ModsReported substitutions/positions: B22

Bio-Activity Profile

Function

Celiac-immunogenic

TargetHuman intestinal T cells / HLA-DQ2

MethodIntestinal T-cell assay