An ADAM is a transmembrane protein that contains a disintegrin and metallop
rotease domain and, therefore, it potentially has both cell adhesion and pr
otease activities. Currently, the ADAM gene family has 29 members, although
the function of most ADAM gene products is unknown. We discuss the ADAM ge
ne products with known functions that act in a highly diverse set of biolog
ical processes, including fertilization, neurogenesis, myogenesis, embryoni
c TGF-alpha release and the inflammatory response.