Peptide Database

Peptide NameBarley peptide B21

Function Ontology

Immunology ▸ Immunomodulation ▸ Celiac-immunogenic

Standard StatusStandard

Sequence Length20 amino acids

Chemical FormulaC113H161N31O31

DescriptionStandard

        PFPQQPQQPFPQPEQPFRQQ
    

Molecular Weight2449.68 Da

Isoelectric Point (pI)6.43

Net Charge (pH 7.0)-0.04

Net Charge (pH 7.4) -0.10

Charge Density (pH 7.0) -0.0019

GRAVY Index-1.94

Hydrophobic Moment 0.49

Boman Index-0.28

Instability Index181.90

Aliphatic Index 0.00

Aromaticity 0.1500

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 993.41

LogP -9.95

H-bond Donors 27.0

H-bond Acceptors 31.0

Rotatable Bonds 70.0

Heavy Atoms 175.0

Ring Count 10.0

Amide Bonds 27.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0031153 VERIFIED: YES

Provenance & Taxonomy

OrganismHordeum vulgare [Plant]

FamilyHordein

Tax ID4513

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Other ModsDeamidation; Reported substitutions/positions: B21

Bio-Activity Profile

Function

Celiac-immunogenic

TargetHuman intestinal T cells / HLA-DQ2

MethodIntestinal T-cell assay