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Beta-parvalbumin (None established specifically for "Perch protein allergen"; PVALB is the universal gene/protein abbreviation for parvalbumins but not unique to perch[3][4][7].)
- Target
- None established specifically for "Perch protein allergen"; PVALB is the universal gene/protein abbreviation for parvalbumins but not unique to perch[3][4][7].
- Molecular classification
- Calcium-binding protein, EF-hand protein, Allergen (major food allergen from fish), Other
01
Overview
Beta-parvalbumin is a low molecular weight, calcium-binding protein and the major allergen responsible for fish-induced food allergies, including those from perch and the majority of other bony fish. It is highly conserved and cross-reactive, making it responsible for broad reactivity among fish-allergic individuals. It is heat-stable, resistant to digestion, and primarily found in fish muscle. Upon ingestion, it can trigger immune responses leading to clinical symptoms ranging from mild oral or gastrointestinal symptoms to severe, life-threatening anaphylaxis[3][4][5][7][9].
- Other names
- Fish parvalbuminBeta-parvalbuminParvalbumin (fish)PVALB (gene abbreviation; not unique to fish or perch)[3][5][7][9]
02
Mechanism of action
Not applicable for drugs, as none interact directly. For allergy, parvalbumin binds to IgE on mast cells and basophils, leading to allergic reactions upon exposure[5].
03
Biological functions
Calcium binding (in muscle and nervous tissue of fish)Structural protein in muscleOther
04
Disease associations
Food allergy (fish allergy)[3][4][5]Anaphylaxis (severe allergic reactions)Other
05
Safety considerations
Heat and digestive stability: Beta-parvalbumin remains allergenic after cooking and digestion, so avoidance is challenging[5].High cross-reactivity: Allergic individuals often react to many different fish species due to conserved epitopes[3][4][5][7].Risk for severe reactions, including anaphylaxis, especially in sensitized patients[3][5].Hidden allergens: May be found in unexpected processed foods[5].
06
Biomarkers
Serum specific IgE to parvalbumin is used clinically for diagnosis of fish allergy and allergen cross-reactivity[3][4][5][9].
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Go deeper on Beta-parvalbumin (None established specifically for "Perch protein allergen"; PVALB is the universal gene/protein abbreviation for parvalbumins but not unique to perch[3][4][7].).
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