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The water-accessible surface area of an IgG antibody. Immunoglobulin G (IgG) is a type of antibody. Representing approximately 75% of serum antibodies in humans, IgG is the most common type of antibody found in blood circulation. [1] IgG molecules are created and released by plasma B cells. Each IgG antibody has two paratopes.
Complement-dependent cytotoxicity (CDC) is an effector function of IgG and IgM antibodies.When they are bound to surface antigen on target cell (e.g. bacterial or viral infected cell), the classical complement pathway is triggered by bonding protein C1q to these antibodies, resulting in formation of a membrane attack complex (MAC) and target cell lysis.
Mechanism of class-switch recombination that allows isotype switching in activated B cells. Immunoglobulin class switching, also known as isotype switching, isotypic commutation or class-switch recombination (CSR), is a biological mechanism that changes a B cell's production of immunoglobulin from one type to another, such as from the isotype IgM to the isotype IgG. [1]
IgG is the most commonly used molecular format in current antibody drugs because it neutralizes infectious agents and activates the complement system to engage immune cells. [45] IgM: 1 Expressed on the surface of B cells (monomer) and in a secreted form (pentamer) with very high avidity. Eliminates pathogens in the early stages of B cell ...
Anti-Pan-Primate IgG [8F1] This is a recombinant monoclonal antibody to pan-primate IgG. This antibody reacts with most primate IgG antibodies, including human IgG. In a research setting the antibody has been used via ELISA to count IgG in supernatants from lung and lymph node tissues from cynomolgus macaques. [32]
The only mammals with heavy-chain (IgG-like) antibodies are camelids such as dromedaries, camels, llamas and alpacas. [6] This is a secondary development: The heavy chains of these antibodies have lost one of their constant domains (C H 1) and undergone modifications in the variable domain (V H ), both structural elements necessary for the ...
The immunoglobulin superfamily (IgSF) is a large protein superfamily of cell surface and soluble proteins that are involved in the recognition, binding, or adhesion processes of cells.
However, fish do not have the same repertoire of antibodies that mammals possess. [9] Three distinct Ig heavy chains have so far been identified in bony fish. The first identified was the μ (or mu) heavy chain that is present in all jawed fish and is the heavy chain for what is thought to be the primordial immunoglobulin.