Ara h1 facts for kids
Quick facts for kids Ara h 1 |
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| Identifiers | |||||||
| Organism | |||||||
| Symbol | ara h 1 | ||||||
| PDB | 3smh | ||||||
| UniProt | E5G076 | ||||||
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Ara h 1 is a special protein found in peanuts. It's a big reason why many people have peanut allergies. This protein is very strong and doesn't break down easily, even with heat.
In North America, about 95% of people with peanut allergies react to Ara h 1. In Europe, fewer people react to it.
What is Ara h 1?
Ara h 1 is a type of protein called a vicilin. It's found in the part of the peanut that stores food for the plant. This protein forms stable groups of three, which helps it stay strong. Because of its very stable shape, Ara h 1 is known to be a powerful allergen. This means it can cause strong allergic reactions in some people.
How Ara h 1 Causes Allergies
The protein Ara h 1 plays a big role in peanut allergic reactions. Studies show that the protein part of the peanut is what causes allergies. Ara h 1 makes up about 12% to 16% of all the protein in peanuts. It's called a major peanut allergen because it causes reactions in many people with this allergy.
This protein can cause serious allergic reactions. The symptoms can include:
- Skin reactions: Like hives, redness, or swelling.
- Itchy feelings: Often around the mouth and throat.
- Stomach problems: Such as diarrhea, cramps, feeling sick, or throwing up.
- Breathing issues: This can happen when air passages swell up.
- Heart problems: Sometimes leading to chest pain.
- Anaphylaxis: This is a very serious, whole-body allergic reaction. It can cause low blood pressure and trouble breathing. It needs urgent medical help.
Even a small amount of Ara h 1 can cause a reaction. For example, saliva can contain this protein. This means sharing food or utensils, or even kissing, can cause allergic reactions. It's important to be careful about this.
How peanuts are cooked can also change how allergenic Ara h 1 is. For instance, roasted peanuts have more active Ara h 1 than fried or boiled peanuts. Roasting seems to make the allergen easier for the body to react to.
Dealing with Peanut Allergies
Right now, there's no cure for peanut allergies. The best way to stay safe is to avoid peanuts completely. But this can be hard because peanuts might accidentally get into other foods. This can happen if food is made on the same machines as peanut products. Sometimes, labels might not even mention peanuts as an ingredient.
Because of this, scientists are looking for new ways to help. They want to find treatments or even create "hypoallergenic" peanuts. These would be peanuts that don't cause allergic reactions. This would help prevent serious reactions like anaphylactic shock if someone accidentally eats peanuts.
Scientists have also developed tests to find peanut allergens in food. Some tests can measure the total peanut parts. Other, newer tests can specifically measure Ara h 1. These tests help to know exactly how much of the allergen is in food products.
See Also
