Protein a Helps Staphylococcus Aureus Avoid

Question

Protein A helps Staphylococcus aureus avoid
A) antibiotics.
B) apoptosis.
C) phagocytosis.
D) cytotoxic T cells.
E) phagosome-lysosome fusion.

Accepted Answer

Protein A is a surface protein found in Staphylococcus aureus that binds to the Fc region of immunoglobulins, preventing opsonization and phagocytosis of the bacteria by host immune cells. Therefore, Protein A helps S. aureus avoid phagocytosis.