The ADA gene

The ADA gene provides instructions for making an enzyme called adenosine deaminase, which is essential for the proper functioning of the immune system. This enzyme helps break down certain molecules in the body, maintaining a healthy balance of cells and substances involved in immune responses. When the ADA gene is faulty or mutated, it can lead to a deficiency of the enzyme, resulting in severe combined immunodeficiency (SCID), a condition where the immune system is weakened or not functioning properly. This highlights the gene's critical role in immune health and cellular balance.