Protein A, Commonly Used in Immunoblots, is Derived From

Question

Protein A, commonly used in immunoblots, is derived from
A) Staphylococcus.
B) Escherichia.
C) Bacillus.
D) Clostridium.

Accepted Answer

Protein A is derived from Staphylococcus aureus and is commonly used in immunoblots to detect and purify antibodies. It binds specifically to the Fc region of many mammalian IgG antibodies, making it a useful tool in protein purification and detection processes.