Pertussis toxin they are formed from two subunits. The "A" subunit possesses enzyme activity, and is transferred to the host cell following a conformational change in the membrane-bound transport "B" subunit. Pertussis toxin is an exotoxin with six subunits (named "S1" through "S5"—each complex contains two copies of "S4"). The subunits are arranged in "A-B" structure: the "A" component is enzymatically active and is formed from the S1 subunit, while the "B" component is the receptor-binding portion and is made up of subunits S2–S5. The subunits are encoded by "ptx" genes encoded on a large PT operon that also includes additional genes
Fabry disease his classic paper on his electron microscopic findings in Fabry disease in 1965. The first specific treatment for Fabry disease was approved in 2001. Fabry disease Fabry disease, also known as Anderson–Fabry disease, is a rare genetic disease that can affect many parts of the body including the kidneys, heart, and skin. Fabry disease is one of a group of conditions known as lysosomal storage diseases. The genetic mutation that causes Fabry disease interferes with the function of an enzyme which processes biomolecules known as sphingolipids, leading to these substances building up in the walls of blood vessels and other