Some Pathogenic Microorganisms Encode Proteins, Such as the Staphylococcus Protein

Multiple Choice

Some pathogenic microorganisms encode proteins, such as the Staphylococcus Protein A, that bind to immunoglobulin constant region domains with high affinity. These microbial proteins provide a benefit to the microorganism by:

A) Preventing antibodies bound to the microbe from binding to Fc receptors on phagocytes
B) Blocking the binding of anti-microbial antibodies to the pathogen surface
C) Cleaving the antibody into fragments that separate the antigen-binding region from the effector function
D) Inducing aggregation of the anti-microbial antibodies by multivalent binding to the pathogen-derived protein
E) Preventing the antibody from neutralizing the pathogen