Quinoproteins: a new class of enzymes with potential use as biosensors.

The field of the enzymology of quinoproteins is still in its infancy. As more progress is made toward understanding the mechanisms of catalysis and electron transfer by protein-bound PQQ, it will become possible to more logically design specific quinoprotein-based electrodes. The characterization of new quinoproteins is progressing at a rapid rate. As new quinoproteins are found, the potential range of applications for use of these enzymes in biosensors will increase as well.