Which of the opsonin is important for protein during cellular event
Answers
Answer:
The phagocytic process is composed of four interrelated phases: chemotaxis,opsonization, ingestion, and digestion. The function of opsonins is to react with bacteria and make them more susceptible to ingestion by phagocytes. Opsonization of bacteria may occur by three different mechanisms.
Answer:
An opsonin (from the Greek opsōneîn, to prepare for eating) is any molecule that enhances phagocytosis by marking an antigen for an immune response or marking dead cells for recycling (i.e., causes the phagocyte to "relish" the marked cell).[1] Opson in ancient Greece referred to the delicious side-dish of any meal, versus the sitos, or the staple of the meal.
Opsonization (also, opsonisation) is the molecular mechanism whereby molecules, microbes, or apoptotic cells are chemically modified to have a stronger attraction to the cell surface receptors on phagocytes and NK cells. With the antigen coated in opsonins, binding to immune cells is greatly enhanced. Opsonization also mediates phagocytosis via signal cascades from cell surface receptors.[2]
Opsonins aid the immune system in a number of ways. In a healthy individual, they mark dead and dying self cells for clearance by macrophages and neutrophils, activate complement proteins, and target cells for destruction through the action of natural killer (NK) cells.
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