Autoimmune regulator

Immune system protein

The autoimmune regulator (AIRE) is a protein that in humans is encoded by the AIRE gene. It is a 13kbp gene on chromosome 21q22.3 that encodes 545 amino acids. AIRE is a transcription factor expressed in the medulla of the thymus. It is part of the mechanism which eliminates self-reactive T cells that would cause autoimmune disease. It exposes T cells to normal, healthy proteins from all parts of the body, and T cells that react to those proteins are destroyed.

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