Peptide Database

Peptide NameBarley peptide B19

Function Ontology

Immunology ▸ Immunomodulation ▸ Celiac-immunogenic

Standard StatusStandard

Sequence Length20 amino acids

Chemical FormulaC116H165N31O28

DescriptionStandard

        LPRPQQPFPWQPQQPFPQPQ
    

Molecular Weight2441.74 Da

Isoelectric Point (pI)9.75

Net Charge (pH 7.0)0.76

Net Charge (pH 7.4) 0.56

Charge Density (pH 7.0) 0.0380

GRAVY Index-1.67

Hydrophobic Moment 0.33

Boman Index-0.16

Instability Index158.37

Aliphatic Index 19.50

Aromaticity 0.1500

Extinction Coeff. Reduced 5500.00

Extinction Coeff. Oxidized 5500.00

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

Amino Acid Composition

TPSA 925.22

LogP -6.96

H-bond Donors 24.0

H-bond Acceptors 29.0

Rotatable Bonds 64.0

Heavy Atoms 175.0

Ring Count 12.0

Amide Bonds 26.0

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_0283128 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: B19

Bio-Activity Profile

Function

Celiac-immunogenic

TargetHuman intestinal T cells / HLA-DQ2

MethodIntestinal T-cell assay