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Interleukin 7 (IL-7) is a protein [5] that in humans is encoded by the IL7 gene. [6] [7] [8] IL-7 is a hematopoietic growth factor secreted by stromal cells in the bone marrow and thymus. It is also produced by keratinocytes, [9] dendritic cells, [10] hepatocytes, [11] neurons, and epithelial cells, [12] but is not produced by normal ...
However, a recent study [32] has shown that IL-9 is, in fact, much closer to both IL-2 and IL-15, than to IL-7. Moreover, the study showed irreconcilable structural differences between IL-7 and all the remaining cytokines signalling through the γc receptor ( IL-2, IL-4, IL-7, IL-9, IL-15 and IL-21).
Thymic stromal lymphopoietin (TSLP) is an interleukin (IL)-2-like cytokine, alarmin, and growth factor involved in numerous physiological and pathological processes, primarily those of the immune system. [5] [6] It shares a common ancestor with IL-7. [7]
The interleukin-7 receptor is a protein found on the surface of cells. It is made up of two different smaller protein chains - i.e. it is a heterodimer , and consists of two subunits, interleukin-7 receptor-α ( CD127 ) and common-γ chain receptor ( CD132 ).
The IL-5 receptor is composed of an α and a βc chain. [23] The α subunit is specific for the IL-5 molecule, whereas the βc subunit also recognised by interleukin 3 (IL-3) and granulocyte-macrophage colony-stimulating factor (GM-CSF). [23] [24] Glycosylation of the Asn196 residue of the Rα subunit appears to be essential for binding of IL-5 ...
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The common gamma chain (γ c) (or CD132), also known as interleukin-2 receptor subunit gamma or IL-2RG, is a cytokine receptor sub-unit that is common to the receptor complexes for at least six different interleukin receptors: IL-2, IL-4, [5] IL-7, [6] IL-9, IL-15 [7] and interleukin-21 receptor.
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