Peptide Database

Peptide NameBarley peptide B22

Function Ontology

Immunology ▸ Immunomodulation ▸ Celiac-immunogenic

Standard StatusStandard

Sequence Length20 amino acids

Chemical FormulaC108H159N29O31

DescriptionStandard

        PQQPFQPQQPFPQQTIPQQP
    

Molecular Weight2359.59 Da

Isoelectric Point (pI)5.96

Net Charge (pH 7.0)-0.04

Net Charge (pH 7.4) -0.10

Charge Density (pH 7.0) -0.0021

GRAVY Index-1.67

Hydrophobic Moment 0.27

Boman Index-0.15

Instability Index152.51

Aliphatic Index 19.50

Aromaticity 0.1000

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 957.53

LogP -10.63

H-bond Donors 25.0

H-bond Acceptors 31.0

Rotatable Bonds 67.0

Heavy Atoms 168.0

Ring Count 9.0

Amide Bonds 28.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0206487 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