IL2RB

IL2RB or Interleukin 2 Receptor Subunit Beta is a protein that in humans is encoded by the IL2RB gene. It is a type of cytokine receptor that specifically binds to interleukin 2, a type of cytokine that regulates the activities of white blood cells responsible for immunity.

Structure

The IL2RB protein is a part of the interleukin receptor family. It is composed of three subunits: alpha (IL2RA), beta (IL2RB), and gamma (IL2RG). The IL2RB subunit is involved in the high-affinity binding of IL2 and is essential for signal transduction. The IL2RB protein is expressed on the surface of certain immune cells, including T cells and natural killer cells.

Function

The primary function of IL2RB is to form a receptor complex with other interleukin receptors to bind interleukin 2. This binding triggers a series of signal transduction events that ultimately lead to the activation of the immune cells. IL2RB plays a crucial role in the regulation of cell proliferation, cell differentiation, and immune response.

Clinical Significance

Mutations in the IL2RB gene have been associated with several immune disorders. For instance, a deficiency in IL2RB can lead to severe combined immunodeficiency (SCID), a condition characterized by a severe defect in both the T- and B-lymphocyte systems.

See Also

• Interleukin 2
• Interleukin receptor
• Cytokine receptor
• Severe combined immunodeficiency

References

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