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Pathways

Fc-EpsilonRI Pathway

Description:

FcεRI is constitutively expressed on mast cells as a tetrameric receptor composed of the IgE-binding α chain, the membrane-tetraspanning β chain, and the disulfide-linked homodimer of the γ chains. The level of expression of the FcεRI on the mast cell surface can be influenced by several factors, such as IgE availability or IgE binding. Antigen (Ag) ligation of IgE-bound FcεRI initiates phosphorylation cascades that cause profound morphological and transcriptional modifications. As FcεRI lacks ...

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