The protein A has the ability to bind antibodies (Option 3).
Protein A is a surface protein which acts as a bacterial defense mechanism against the host immune system. This protein (protein A) was originally discovered within the cell wall of Staphylococcus aureus.Protein A binds the fragment crystallizable region (Fc region) of immunoglobulin G (IgG) antibodies.Streptokinase is a enzyme produced by Streptococci spp. in order to break up blood clots and thus spreads from the original site of infection.Coagulase is another bacterial enzyme that clots blood plasma by converting fibrinogen in plasma to fibrin.Hydrogen peroxide is an oxidizing agent which is used as an antimicrobial agent.
In conclusion, protein A has the ability to bind antibodies (IgG antibodies).
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which is the progenitor of platetes
Answer:
The progenitor of the platelets is called a megakaryocyte.
Explanation:
Platelets are blood structures, which participate in the process of blood clotting. They are also known as thrombocytes.
The process of platelet formation is called thrombopoiesis, and it consists of
Formation of megakaryoblasts from the hemocyte, a hematopoietic precursor cell. Megakaryoblasts produce megakaryocytes. Megakaryocytes are precursors to platelets.Each megakaryocyte must fragment to form the thrombocytes or platelets.