An Overview of Fruit Allergens: Structural, Functional, Phylogenetical, and Clinical Aspects

Most of the allergenic proteins from fruits identified so far belong to different families of pathogenesis-related (PR) proteins. These PR proteins have been classified in different families of structurally and functionally unrelated proteins, but the majority of all fruit allergens belong to three...

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Main Authors: Annick Barre, Hervé Benoist, Pierre Rougé
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:Allergies
Subjects:
Online Access:https://www.mdpi.com/2313-5786/3/3/10
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author Annick Barre
Hervé Benoist
Pierre Rougé
author_facet Annick Barre
Hervé Benoist
Pierre Rougé
author_sort Annick Barre
collection DOAJ
description Most of the allergenic proteins from fruits identified so far belong to different families of pathogenesis-related (PR) proteins. These PR proteins have been classified in different families of structurally and functionally unrelated proteins, but the majority of all fruit allergens belong to three groups, in particular PR-5 thaumatin-like proteins (TLP), PR-10 Bet v 1-like proteins, and PR-14 non-specific lipid transfer proteins (nsTLP). Some allergenic proteins from fruits can also be found among PR-protein families of PR-2 β1,3-glucanase proteins, PR-3 chitinases I, II, IV–VII, and PR-8 chitinases III. In addition, other important fruit allergens occur in protein families unrelated to the PR-protein families, such as the profilins and the newly emerging group of gibberellin-regulated proteins (GBRP). Finally, proteins that belong to seed storage proteins from higher plants, including 2S albumins, 7S globulins (vicilin), and 11S globulins (legumin), must be retained as possible potential fruit allergens resulting from the unintended consumption of the seeds. Here, we present an overview of the structural organization, functional properties, and phylogenetical relationships among these different groups of fruit allergens, supporting the occurrence of cross-reactivity and cross-allergenicity often described between fruit allergens, and the corresponding allergens from vegetables and pollens.
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spelling doaj.art-8a90f8e263e64aa0a9f884b7fb1a5aef2023-11-19T09:13:21ZengMDPI AGAllergies2313-57862023-07-013313417610.3390/allergies3030010An Overview of Fruit Allergens: Structural, Functional, Phylogenetical, and Clinical AspectsAnnick Barre0Hervé Benoist1Pierre Rougé2UMR 152 PharmaDev, Faculté de Pharmacie, Institut de Recherche et Développement, Université Paul, Sabatier, 35 Chemin des Maraîchers, 31062 Toulouse, FranceUMR 152 PharmaDev, Faculté de Pharmacie, Institut de Recherche et Développement, Université Paul, Sabatier, 35 Chemin des Maraîchers, 31062 Toulouse, FranceUMR 152 PharmaDev, Faculté de Pharmacie, Institut de Recherche et Développement, Université Paul, Sabatier, 35 Chemin des Maraîchers, 31062 Toulouse, FranceMost of the allergenic proteins from fruits identified so far belong to different families of pathogenesis-related (PR) proteins. These PR proteins have been classified in different families of structurally and functionally unrelated proteins, but the majority of all fruit allergens belong to three groups, in particular PR-5 thaumatin-like proteins (TLP), PR-10 Bet v 1-like proteins, and PR-14 non-specific lipid transfer proteins (nsTLP). Some allergenic proteins from fruits can also be found among PR-protein families of PR-2 β1,3-glucanase proteins, PR-3 chitinases I, II, IV–VII, and PR-8 chitinases III. In addition, other important fruit allergens occur in protein families unrelated to the PR-protein families, such as the profilins and the newly emerging group of gibberellin-regulated proteins (GBRP). Finally, proteins that belong to seed storage proteins from higher plants, including 2S albumins, 7S globulins (vicilin), and 11S globulins (legumin), must be retained as possible potential fruit allergens resulting from the unintended consumption of the seeds. Here, we present an overview of the structural organization, functional properties, and phylogenetical relationships among these different groups of fruit allergens, supporting the occurrence of cross-reactivity and cross-allergenicity often described between fruit allergens, and the corresponding allergens from vegetables and pollens.https://www.mdpi.com/2313-5786/3/3/10edible fruitfleshy fruitallergenallergen familypathogenesis-related protein familythaumatin-like protein
spellingShingle Annick Barre
Hervé Benoist
Pierre Rougé
An Overview of Fruit Allergens: Structural, Functional, Phylogenetical, and Clinical Aspects
Allergies
edible fruit
fleshy fruit
allergen
allergen family
pathogenesis-related protein family
thaumatin-like protein
title An Overview of Fruit Allergens: Structural, Functional, Phylogenetical, and Clinical Aspects
title_full An Overview of Fruit Allergens: Structural, Functional, Phylogenetical, and Clinical Aspects
title_fullStr An Overview of Fruit Allergens: Structural, Functional, Phylogenetical, and Clinical Aspects
title_full_unstemmed An Overview of Fruit Allergens: Structural, Functional, Phylogenetical, and Clinical Aspects
title_short An Overview of Fruit Allergens: Structural, Functional, Phylogenetical, and Clinical Aspects
title_sort overview of fruit allergens structural functional phylogenetical and clinical aspects
topic edible fruit
fleshy fruit
allergen
allergen family
pathogenesis-related protein family
thaumatin-like protein
url https://www.mdpi.com/2313-5786/3/3/10
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