Igg -

: Highly effective at neutralizing toxins and initiating opsonization .

: Often associated with chronic antigen exposure and may play a role in immune tolerance, though elevated levels are sometimes linked to autoimmune conditions. Key Biological Functions : Highly effective at neutralizing toxins and initiating

IgG is a Y-shaped glycoprotein composed of approximately and 4–18% carbohydrate . Its structure consists of: : Highly effective at neutralizing toxins and initiating

: The "tail" of the Y-shape, which interacts with cell surface receptors (Fc receptors) and the complement system to trigger immune responses. The Four Subclasses of IgG : Highly effective at neutralizing toxins and initiating

: Primarily responds to carbohydrate (polysaccharide) antigens, such as those found in the capsules of certain bacteria.