FCER1G Antibody - #DF13263

Adapter protein containing an immunoreceptor tyrosine-based activation motif (ITAM) that transduces activation signals from various immunoreceptors. As a component of the high-affinity immunoglobulin E (IgE) receptor, mediates allergic inflammatory signaling in mast cells. As a constitutive component of interleukin-3 receptor complex, selectively mediates interleukin 4/IL4 production by basophils, priming T-cells toward effector T-helper 2 subset. Associates with pattern recognition receptors CLEC4D and CLEC4E to form a functional signaling complex in myeloid cells. Binding of mycobacterial trehalose 6,6'-dimycolate (TDM) to this receptor complex leads to phosphorylation of ITAM, triggering activation of SYK, CARD9 and NF-kappa-B, consequently driving maturation of antigen-presenting cells and shaping antigen-specific priming of T-cells toward effector T-helper 1 and T-helper 17 cell subtypes. May function cooperatively with other activating receptors. Functionally linked to integrin beta-2/ITGB2-mediated neutrophil activation. Also involved in integrin alpha-2/ITGA2-mediated platelet activation.

Cell membrane>Single-pass type I membrane protein.

IgE Fc receptor is a tetramer of an alpha chain, a beta chain, and two disulfide-linked gamma chains. Associates with FCGR1A; forms a functional signaling complex. Associated with CLEC6A (By similarity). Interacts with CLEC4E. Interacts (via ITAM domain) with SYK (via SH2 domains); activates SYK, enabling integrin-mediated activation of neutrophils and macrophages (By similarity). Interacts with CSF2RB and recruits SYK in response to IL3 stimulation; this interaction is direct (By similarity). Interacts with CD300LH; the interaction may be indirect (By similarity). Interacts with CD300LD (By similarity). Interacts with TARM1.

Belongs to the CD3Z/FCER1G family.