How does protein A help Staphylococcus aureus evade phagocytes?
A) It binds the Fc portion of antibodies, interfering with opsonizaton and phagocytosis.
B) It binds the Fab portion of antibodies, interfering with opsonizaton and phagocytosis.
C) It coats the bacterial cell, destroying LPS and preventing recognition by phagocytes.
D) It makes holes in the cytoplasmic membrane of phagocytes, killing them.
E) It degrades complement protein C5a, preventing phagocyte recruitment and attachment.

Question

Quizplus · Accepted Answer

Protein A binds to the Fc portion of antibodies, preventing opsonization and phagocytosis. This allows S. aureus to evade the immune response and persist in the host.

How Does Protein a Help Staphylococcus Aureus Evade Phagocytes