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  2. Immunoglobulin E - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_E

    Immunoglobulin E (IgE) is a type of antibody (or immunoglobulin (Ig) "isoform") that has been found only in mammals. IgE is synthesised by plasma cells. Monomers of IgE consist of two heavy chains (ε chain) and two light chains, with the ε chain containing four Ig-like constant domains (Cε1–Cε4). [1]

  3. CD20-like family - Wikipedia

    en.wikipedia.org/wiki/CD20-like_family

    In molecular biology, the CD20-like family of proteins includes the CD20 protein and the beta subunit of the high affinity receptor for IgE Fc, MS4A2.MS4A2 has a tetrameric structure consisting of a single IgE-binding alpha subunit, a single beta subunit, and two disulfide-linked gamma subunits.

  4. Immunoglobulin heavy chain - Wikipedia

    en.wikipedia.org/wiki/Immunoglobulin_heavy_chain

    Each heavy chain has two regions: a constant region (which is the same for all immunoglobulins of the same class but differs between classes).. Heavy chains γ, α and δ have a constant region composed of three tandem (in a line next to each other) immunoglobulin domains but also have a hinge region for added flexibility.

  5. CD23 - Wikipedia

    en.wikipedia.org/wiki/CD23

    CD23 is known to have a role of transportation in antibody feedback regulation. Antigens which enter the blood stream can be captured by antigen specific IgE antibodies. The IgE immune complexes that are formed bind to CD23 molecules on B cells, and are transported to the B cell follicles of the spleen.

  6. Fragment crystallizable region - Wikipedia

    en.wikipedia.org/wiki/Fragment_crystallizable_region

    In IgG, IgA and IgD antibody isotypes, the Fc region is composed of two identical protein fragments, derived from the second and third constant domains of the antibody's two heavy chains; IgM and IgE Fc regions contain three heavy chain constant domains (C H domains 2–4) in each polypeptide chain.

  7. FCER1 - Wikipedia

    en.wikipedia.org/wiki/FCER1

    The high-affinity IgE receptor, also known as FcεRI, or Fc epsilon RI, is the high-affinity receptor for the Fc region of immunoglobulin E (IgE), an antibody isotype involved in allergy disorders and parasite immunity. FcεRI is a tetrameric receptor complex that binds Fc portion of the ε heavy chain of IgE. [1]

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  9. Isotype (immunology) - Wikipedia

    en.wikipedia.org/wiki/Isotype_(immunology)

    The IgG, IgE and IgA antibody isotypes are generated following class-switching during germinal centre reaction and provide different effector functions in response to specific antigens. IgG is the most abundant antibody class in the serum and it is divided into 4 subclasses based on differences in the structure of the constant region genes and ...