(August 2003) Cells show an astounding awareness of the environments in which they find themselves, actually adapting their behavior to changing surroundings. The key to this ability is a constant sampling of the multitude of molecules found in their environments, many of which are signals that convey information to the cell [1]. To do communicate with their environment, they employ a large array of molecules that allow signals to be sent, received, deciphered and responded to. These molecules are generally referred to as “signaling molecules [2].” Categorization of these molecules on the most general level is based on whether they…