| | Family | Proteins | Functions | Allergens identified with source and allergenic symptoms |
| | PR-1 | PR-1 a, PR-1 b, and PR-1 c | Antifungal | Cuc m 3 (muskmelon)—oral allergy syndrome | | PR-2 | β-1,3-Glucanases | Cleaves β-1,3-glucans | Hev b 2 (latex)—contact dermatitis
Ole e 9 (olive)—respiratory allergy
Mus a 5 (banana)—oral allergy syndrome | | PR-3 | Chitinase types I, II, IV, V, VI, and VII | Endochitinase | Pers a 1 (avocado)—itchy eyes or nose, asthma, swelling, and so forth.
Mus a 2 (banana)—food allergy like swelling of lips, anaphylaxis, and so forth | | PR-4 | Chitinase types I and II | Antifungal and chitinase | Hev b 6.01, Hev b 6.02, and Hev b 6.03 (latex)—contact dermatitis | | PR-5 | Thaumatin-like proteins | Antifungal | Jun a 3 (mountain cedar), Cry j 1 (Japanese cedar), and Cup a 3 (Arizona cypress)—rhinitis, conjunctivitis, and asthma
Pru av 2 (cherry), Mal d 2 (apple), Cap a 1 (bell pepper), Act d 2 (kiwi), and Mus a 4 (banana)—oral allergy syndrome | | PR-6 | Tomato proteinase inhibitor I | Proteinase inhibitor | — | | PR-7 | Tomato endoproteinase P | Endoproteinase | — | | PR-8 | Cucumber chitinase | Chitinase III | Hevamine (latex)—contact dermatitis.
Ziz m 1 (Indian jujube)—oral allergy syndrome
Cof a 1 (coffee)—eye and airway allergy | | PR-9 | Tobacco lignin-forming peroxidase | Peroxidase | — | | PR-10 | Parsley “PR-1”
Bet v 1, Mal d 1, Api g 1, and Dau c 1 | Ribonuclease-like | Bet v 1 (birch pollen)— allergic rhinoconjunctivitis and asthma
Pru av 1 (cherry), Mal d 1 (apple), Api g 1 (celery), and Dau c 1 (carrot)—oral allergy syndrome
Gly m 4 (soy), Vig r 1 (mung bean), Cor a 1 (hazelnut), and Cas s 1 (chestnut)—oral allergy syndrome | | PR-11 | Tobacco chitinase type V | Chitinase | — | | PR-12 | Radish Rs-AFP3 | Defensin | — | | PR-13 | Arabidopsis THI2.1 | Thionin | — | | PR-14 | Lipid transfer proteins | Shuttling of phospholipids and fatty acids | Par j 1 (weed)—rhinitis and asthma
Pru p 3 (peach), Mal d 3 (apple), Pru av 3 (cherry), Pru ar 3 (apricot), Cor a 8 (hazelnut), Cas s 8 (chestnut), and Zea m 14 (maize)—oral allergy syndrome | | PR-15 | Barley OxOa | Oxalate oxidase | — | | PR-16 | Barley OxOLP | Oxalate-like oxidase | — | | PR-17 | Tobacco PRp27 | Unknown | — |
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