What is the main allergenic protein frequently found in finned fish like salmon or tuna?
Answer
Parvalbumin
The biochemical difference between finned fish allergens and shellfish allergens is key to dietary management. The main allergenic protein often identified in finned fish, such as salmon and tuna, is parvalbumin. This structure is biochemically distinct from tropomyosin, which is the primary allergen associated with shellfish. Because of this structural difference, the lack of guaranteed cross-reactivity between parvalbumin and tropomyosin means that a shellfish allergy does not automatically imply a finned fish allergy, allowing those confirmed only sensitive to shellfish to safely consume finned fish, pending proper medical guidance.
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