Immunoglobulin types and their functions Igm ,IgG, IgE
There are 5 types of Immunoglobulin, which are unique in their functions. These ig or antibodies synthesize in the host as the result of antigens.
IGA, IgM, IgA, IgD, and IgE are different kinds of antibodies. Each antibody has a different function and structure. All antibodies consist of light chains and heavy chains. Some antibodies are bivalent but IgM is pentavalent.
What are the five different types of antibodies?
IgG Antibody
IgM antibody
IgE antibody
IgA antibody
IgD antibody
Functions of IgG, IgM IgD, IgA, and IgE antibodies
Functions of IgG antibodies in the body
This antibody has the highest concentration in serum which is 75%.
IgG can cross the placenta.
this immunoglobin is more efficient in precipitation reactions than agglutination reactions.
This Ig has a further three subclasses.
Immunoglobin IgM function
It is a pentamer.
Synthesis in primary response of infection
It acts as a marker for recent infection.
Igm activates the complements.
Its half-life is about 2-3 days.
IgM has a 0.5-2 g/l concentration in serum.
This antibody is most efficient in agglutination and complement fixation reactions.
Characteristics of IgD antibody
Its amount is negligible in serum.
Immature B.lymphocyte display only IgD antibodies.
characteristics of IgA antibody
This antibody is a dimer in structure.
Iga is found on mucosal surfaces.
It cannot cross the placenta.
Its amount in serum is about 0.8-4g/l.
The function of IgA Antibody
IgA protects the mucosa surface from bacterial attachments because it is a secretory antibody.
In the Immunology test, you will explore your knowledge of immunology. which of the following is not a function of antibodies a. opsonization b. complements fixation 1) Immunity has ……… basic types. a. two b. three c. four 2) Percentage of IgG in serum…
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